Those who used to go down saying the takbir

Kulayb said: When Sayyiduna Abdullah bin Yazid al-Khatmi (may Allah be pleased with him) raised his head from bowing, he would go down while saying the takbir, as though he were on a swing, and in this way he would go into prostration.

Aswad said: When Sayyiduna Umar (may Allah be pleased with him) raised his head from bowing, he would say "Sami'a Allahu liman hamidah" (Allah hears the one who praises Him) before straightening his back. And when he said the takbir, he would say it while going down.

Ibrahim said: When you go down for prostration, say the takbir, and when you go down for bowing, say the takbir as well.

Aswad said: Sayyiduna Umar (may Allah be pleased with him) used to say the takbir while going down for prostration.

Ibrahim said: When Sayyiduna Umar (may Allah be pleased with him) said "Sami'a Allahu liman hamidah" (Allah hears the one who praises Him), he would go down while saying the takbir.