Hadith 186

Bulugh al-Maram

Book 2: The Book of Prayer
وَعَنْ وَائِلِ بْنِ حُجْرٍ ‏- رضى الله عنه ‏- { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-كَانَ إِذَا رَكَعَ فَرَّجَ بَيْنَ أَصَابِعِهِ , وَإِذَا سَجَدَ ضَمَّ أَصَابِعَهُ } رَوَاهُ اَلْحَاكِمُ .‏ 1‏
Wa'il bin Hujr (RA):

Whenever the Prophet (ﷺ) bowed, he would spread out his fingers and when he prostrated he would bring his fingers together. [Reported by al-Hakim).