Sahih Muslim 392
Sahih Muslim · Book 4: The Book of Prayers · Affirming The Takbir For Every Movement Up Or Down In The Prayer, Except When Rising From Ruku' When One Should Say: Sami'aAllahu Liman Hamidah (Allah Hears Those Who Praise Him)
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا يَعْقُوبُ، - يَعْنِي ابْنَ عَبْدِ الرَّحْمَنِ - عَنْ سُهَيْلٍ ، عَنْ أَبِيهِ ، عَنْ أَبِي هُرَيْرَةَ ، أَنَّهُ كَانَ يُكَبِّرُ كُلَّمَا خَفَضَ وَرَفَعَ وَيُحَدِّثُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَفْعَلُ ذَلِكَ .
Suhail reported on the authority of his father that Abu Huraira used to recite takbir on all occasions of rising and bending (in prayer) and narrated that the Messenger of Allah (ﷺ) used to do like that.