Abu Huraira reported that Allah's Messenger (ﷺ) used to observe, silence for a short while between the takbir (at the time of opening the prayer) and the recitation of the Qur'an. I said to him:
Messenger of Allah, for whom I would give my father and mother in ransom, what do you recite during your period of silence between the takbir and the recitation? He said: I say (these words):" O Allah, remove my sins from me as You have removed the East from the West. O Allah purify me from sins as a white garment is purified from filth. O Allah! wash away my sins with snow, water, and ice."
Reference: Sahih Muslim 598 a-b In-book : Book 5, Hadith 190 USC-MSA web (English) : Book 4, Hadith 1245 (deprecated)
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