وَعَنْ وَائِلِ بْنِ حُجْرٍ رضى الله عنه
«أَنَّ اَلنَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ إِذَا رَكَعَ فَرَّجَ بَيْنَ أَصَابِعِهِ، وَإِذَا سَجَدَ ضَمَّ أَصَابِعَهُ» رَوَاهُ اَلْحَاكِمُ. 11 صحيح
Whenever the Prophet (sallallahu alayhi wa sallam) bowed, he would spread out his fingers and when he prostrated he would bring his fingers together. [Reported by al-Hakim).
Bulugh al-Maram 362, Book 2, The Book of Prayer, Hadith 183. 1 min read