It was narrated that Abu Bushr said: "I heard Yusuf-meaning Ibn Mahak- narrating that Hakim said: “I gave my pledge of allegiance to the Messenger of Allah (ﷺ), pledging that I would go down (in prostration) only after standing up from bowing”"
Sahih IsnaadSahih IsnaadIsnaad SahihBook 12 · Hadith 56