Reference: Fataawa Noor ‘alad-Darb – Question No.6371, Page 203, Volume 12
Question: O noble Shaykh, I utter the words of remembrance of Allaah a hundred times, so is this form of remembrance something which has been legislated or not?
Response: Yes, uttering the words of remembrance [of Allaah] a hundred times is something which has been legislated, and therein is much good. So [that which has been legislated is for] you [to] say:
[لا إله إلا الله، وحده لا شريك له، له الملك، و له الحمد، و هو على كل شيء قدير]
…a hundred times in the morning, and likewise:
[سبحان الله و بحمده]
…a hundred times in the evening, because [as the hadeeth mentions] whoever says:
[سبحان الله و بحمده]
And the scholars have said it is best to leave this [remembrance] until the end of the day, just before you go to sleep, so your sins will be forgiven [right up] until you sleep.
