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Glory to Allah and praise to Allah and there is no God but Allah and Allah is the most great.
The Jew asked, “What rewards one could get if he recites this phrase regularly?”
The Prophet of Allah said: When the sanctfier says ‘Subhan Allah’, then the angels under the Firmament too will repeat ‘Subhan Allah’. And the reciter will get ten times more reward. When the person says ‘Alhamdu lillah’, then Allah rewards him with the world and the Hereafter. These are the words that will be on the mouth of the people who enter the precincts of the Heaven because they used to recite the same words while on the earth. When the person says, ‘La ilaha il Allah’, Allah orders awarding to him a place in the Heaven for uttering these words, because ‘Hal jazaal ehsan illal ehsaan’. When the Jewish scholar heard this, he said, “O Muhammad! You tell the truth!”
Amir’ul-Mu’mineen (as) said: A group of beggars came to the Prophet of Islam (S) and said, ‘Ya Rasool Allah (S)! The affluent have money and they can perform the Haj. We don’t have the means to fulfill this important tenet! They have slaves, whom they can free to earn Allah’s goodwill. We can’t do that. They have wealth that they can do charity. We cannot be charitable! They can go for Jehad, we cannot do that!’ The Prophet of Islam (S) replied,’ One who repeats the words “Allaho Akbar” a hundred times, he will get the reward equal to that for releasing a hundred slaves. One who repeats the words “Subhan Allah” a hundred times he will get the reward for a Haj in which a hundred camels had been offered as sacrifice by him. One who repeats the words “Al hamdu Lillah” a hundred times, he will get the reward for a Jehad for which he had donated a hundred steeds. When a person repeats the words ‘La ilaha il Allah” a hundred times, the reward will be the maximum.’ This news reached the affluent people and they too started reciting the words. The beggars came back to the Prophet (S) and said, “O Prophet of Allah! The rich too have started doing the same as you have asked us to do!’ The Prophet (S) replied, ‘This is Allahs Bounty! He can give to whoever He wishes to!’”
Imam Ar-Ridha’ (as) has said, “One who recites a hundred times each of the following words,’ Alhamdulillah’ ‘Subhan Allah’ ‘La ilaha il Allah’ and says the Durood ‘Allahu ma salle ala Muhammadin wa aale Muhammad’ a hundred times, and later on says ‘Alla humma zawwijni min al hoor il ain’, Allah will grant him the Hur al-’Ayn in the Heaven. These five hundred words will be the Mehr (alimony) for the Hur al-’Ayn. This is the reason why 500 Deenar is fixed as the alimony for the Mu’mina women!”

The Reward for Tahleel or Declaration of Allah’s Unity
The Prophet of Islam (S) has said: Allah told to Prophet Musa (as) that if whatever is there on the earth and the sky is put in one pan of a balance and in the other the words ’La ilaha il Allah’ are put, the pan in which these words are put will tilt to its side’. And said, ‘Reciting these words when one takes his last breaths would be of immense advantage that the spirit would leave the body with ease.’
Imam Ja’far As-Sadiq (as) has said: The more these words are recited, the more one will earn Rewards. This is an invocation whose superiority is immeasurable. Every prayer has an end. When the five mandatory prayers are offered, ones duty has been done! But there is no limit to the recitation of ‘La ilaha il Allah’. One can recite it, however much he wishes to do it. Then the Imam recited the following verse,
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O” you who believe! remember Allah, remembering frequently And glorify Him morning and evening” (33:41-42)
(O believers! Talk of Allah a lot and do His invocation day and night.’
Imam Ar-Ridha’ (as) has said that Allah told to Prophet Nooh (as) that when his ark was engulfed in high tide, he should recite the following words a thousand times, “La ilaha il Allah” The Imam also said that the recitation of these words will ward away penury and hardship and also relieves one from the pressures of the grave. One who regularly recites these words everyday, Allah will pardon his five thousand sins. It will be like completing the recitation of the Qur’an twelve times that day’
Therefore, bearing witness to the Unity of Allah by reciting, “Ashaduan la ilaha il Allah” is a very important invocation and will be the cause of ones deliverence.
It is authentically narrated that once Jibrael (as) came to Prophet Yusuf (as) to the upper chamber of his royal palace. He noticed a wayfarer in tatters on the street. Jibrael (as) said, “O Prophet of Allah (S)! Do you know who that person is?” Prophet Yusuf (as) said, “Please tell me who he is?” Jibrael (as) said that the person was the one who bore witness to your innocence!’ Hearing this, Prophet Yusuf (as) asked his men to fetch the persaon to his presence.
When the person was brought up, Prophet Yusuf treated him with great deference, ordered his men to give him a nice bath, dress him in expensive raiment and provide to him a chamber in the palace to live in and get him married to a beautiful lass. When all this was accomplished as per the wish of Prophet Yusuf (as), the person went away from there in a state of happiness. Jibrael (as) then said, “O Prophet of Allah(S)!
How ungrateful is the human being that if he bears witness to the Unity of Allah from the depths of his heart, Allah would give him palaces in the Heaven, delicious food and Hur al-’Ayn to consort with! When a creature of Allah could give all this to a person for bearing witness to his innocence, then no doubt the words “Ashaduan la ilaha il Allahu” are the key to the Heaven!”

The Superiority of Adhkar or Invocations
Imam Ja’far As-Sadiq (as) narrates, “Whoever utters the words ‘La ilaha il Allah,’ Allah will creat a rooster that will hover over his head till the Day of Judgement and keep invoking Allah and the reward for that would go to the person.
The Prophet of Allah (S) has said, “Ask your people on the verge of death to recite ‘La ilaha il Allah,’ one whose last utterence are these words will certainly land in the Heaven.”
It is narrated from Imam Ar-Ridha’ (as) that when prophet Nooh (as) boarded the ark, Allah sent to him a Revelation, ‘When you feel the fear of ship wreck, recite these words a thousand times, ‘La ilaha il Allah.’
It is narrated from Imam Ja’far As-Sadiq (as) that whoever recites a hundred times the words

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“There is no God but Allah, the king, the clear Truth”
Allah would save him from penury and he will be provided safety from the pressures of the grave. In this life he will become affluent.
It is narrated in another tradition that one who recites this invocation 32 times, will take a turn towards prosperity. Penury and difficulties would desert him. He will be knocking at the threshold of the Heaven.
An authentic tradition narrates that whoever recites the following words fifteen times,

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I bear witness that there is no God but Allah indeed indeed, that there is no God but Allah with belief and certainty, that there is no God but Allah with slavery and ?
Allah will have a Bounteous look towards him and till the person enters the precincts of the Heaven, He will have an eye of Blessing on him.
Imam Ja’far As-Sadiq (as) narrates that if a person recites the following invocation ten times every day,

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I bear witness that there is no God but Allah One that has no partner, no sons
his record of deeds will get entry of forty five thousand virtuous deeds and delete the record of forty five thousand bad deeds. To the same extent the person’s status would be elevated.
In another narration it is said that this invocation would save him from the machinations of the Satan on the Day of Judgement. He will be pardoned for the major sins committed by him. He will get the reward for reciting the complete Qur’an ten times and would also get a place in the Heaven.

The Superiority of Tasbeeh or the Rosary
Imam Ja’far As-Sadiq (as) says that when a Mu’min says

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Glory to Allah and praise to Him, glory and praise to Allah the most great.
Allah will enter three thousand virtuous deeds in his account and deletes one thousand misdeeds from there. Allah will create a rooster that will repeat this tasbeeh till the Day of Judgement and the reward for this will go to the account of the person.
Amir’ul-Mu’mineen (as) has said that when a person says ‘Subhan Allah,’ the angels would pray for him.
Imam Ja’far As-Sadiq (as) has said that one who recites

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Glory and praise to Allah, Glory to Allah the Great.
thirty times, Allah will remove penury and difficulties from him, make him affluent and allot a place for him in the Heaven.
It is narrated from Amir’ul-Mu’mineen (as) that when Allah had created the light (Noor) of the Prophet (S), He had kept it for twelve thousand years under a curtain, Hijab al-Qudrat. The Noor used to recite the following Tasbeeh:

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Glory be to my Lord the High, and by His Praise,
again for eleven thousand years the noor was under a curtain, Hijab al-Azmath, when it recited the words,

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Glory to the one knowledgeable of all secrets,
for another ten thousand years the Noor was under the Hijab al Mann reciting,

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Glory to Allah the alive who does not ,
for another nine thousand years the Noor was under the curtain, Hijab al-Rehmat, when it recited,

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Subhan ar rabbi al aala,
thereafter the Noor was under the curtain, Hijab al Saadaat, for eight thousand years and it recited,

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Subhana man huwa dayamun la yas-hu,
for the next seven thousand years the Noor was under the curtain, Hijab al Karamat, and recited,

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Subhana man huwa ghaniun la yaftaghir,
for the next six thousand years the Noor was under the curtain, Hijab al Manzila,when it recited,

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Subhan il aleemul kareem,
for the next five thousand years the Noor was under the curtain, Hijab al Hidayat, when it recited,

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Subhana zil arshil azeem,
for the next four thousand years the Noor was under the curtain, Hijab an nabbuwa, when it recited,

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Subhana rabbil izzate amma yasefoon,
for the next three thousand years the Noor was under the curtain, Hijab ar rafaa, when it recited,

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Subhana zil mulke wal malakoot,
then for the next two thousand years the Noor was under the curtain, Hijab al-Haibat, when it recited,

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Subhan allahi wa behamde,
finally for one thousand years the Noor was under the curtain, Hijab ash Shafaat, when it recited,

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Subhana Rabbil azeeme wa behamdehi