Bulugh al-Maram 2 The Book of Prayer كتاب الصلاة 198

وَفِي رِوَايَةٍ لَهُ : { وَقَبَضَ أَصَابِعَهُ كُلَّهَا , وَأَشَارَ بِاَلَّتِي تَلِي اَلْإِبْهَامَ } 1 1 – صحيح . رواه مسلم ( 580 ) ( 115 ) ، والرواية برقم ( 116 ) .

In another narration of Muslim: ‘and he clenched all his (right hand) fingers and pointed with the index finger.’