Ka'b b. 'Ujra reported Allah's Messenger (ﷺ) as saying:
There are certain remembrances, the repeaters of which or the performers of which after every prescribed prayer will never be caused disappointment:" Glory be to Allah" thirty-three times." Praise be to Allah" thirty-three times, and" Allah is most Great" thirty-four times.
Reference: Sahih Muslim 596 a In-book : Book 5, Hadith 186 USC-MSA web (English) : Book 4, Hadith 1241 (deprecated)
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