The Messenger of Allah ﷺ said, "I have grown heavy, so do not race ahead of me in standing, bowing, or prostrating during the prayer."
قال رسول الله ﷺ: إني قد بدنت، فلا تبادروني بالقيام في الصلاة، والركوع، والسجود.
No references are available.
Tabarani reported it in Al-Kabir (1579), from Ali bin Abdul-Aziz, who said, "Asim bin Ali narrated to us, who said, Ishaq Azraq narrated to us, from Zakariya bin Abu Zaida, from Saad bin Ibrahim, from Nafi bin Jubayr bin Mutim, from his father," and he related the hadith.Haythami said in Al-Majma (2411), "Tabarani reported it in Al-Kabir, and its narrators are the narrators of the sahih."I say, it is as he said. Ishaq Azraq is Ishaq bin Yusuf bin Mirdas Makhzumi Wasiti, known as Azraq, one of the narrators found in all six books.