The Book of Prayer
Bulugh al-Maram #377
كتاب الصلاة
وَفِي رِوَايَةٍ لَهُ: «وَقَبَضَ أَصَابِعَهُ كُلَّهَا, وَأَشَارَ بِاَلَّتِي تَلِي اَلْإِبْهَامَ»
In another narration of Muslim:
'and he clenched all his (right hand) fingers and pointed with the index finger.'
وَفِي رِوَايَةٍ لَهُ : "وَقَبَضَ أَصَابِعَهُ كُلَّهَا , وَأَشَارَ بِاَلَّتِي تَلِي اَلْإِبْهَامَ"
'and he clenched all his (right hand) fingers and pointed with the index finger.'
— Bulugh al-Maram, Hadith 377