How one should go down for prostration

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.'"

أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ، قَالَ حَدَّثَنَا خَالِدٌ، عَنْ شُعْبَةَ، عَنْ أَبِي بِشْرٍ، قَالَ سَمِعْتُ يُوسُفَ، - وَهُوَ ابْنُ مَاهِكٍ - يُحَدِّثُ عَنْ حَكِيمٍ، قَالَ بَايَعْتُ رَسُولَ اللَّهِ ﷺ أَنْ لاَ أَخِرَّ إِلاَّ قَائِمًا .