Sa'd reported that he heard his father or his uncle say ; I witnessed the Prophet (ﷺ) while offering prayer. He used to stay in his bowing and his prostration as long as one utters the words "Glory be to Allah and praise be to Him" three times.
Reference: Sunan Abi Dawud 885 In-book : Book 2, Hadith 495 English translation : Book 2, Hadith 884
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