I saw the Prophet (ﷺ) placing his knees (on the ground) before his hands when he prostrated. [Reported by al-Arba'ah].

{ رَأَيْتُ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-إِذَا سَجَدَ وَضَعَ رُكْبَتَيْهِ قَبْلَ يَدَيْهِ } أَخْرَجَهُ اَلْأَرْبَعَةُ .‏ [1]‏