The Book of Oaths (qasamah), Retaliation and Blood Money
45/44, 45: Chapter
Diyah For Fingers.
Sunan an-Nasai
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنِي قَتَادَةُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، رضى الله عنهما عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " هَذِهِ وَهَذِهِ سَوَاءٌ " . يَعْنِي الْخِنْصَرَ وَالإِبْهَامَ .
It was narrated from Ibn 'Abbas that the Propher said: "this and this are the same,": meaning the little finger and the thumb.
Reference : Sunan an-Nasa'i 4847In-book reference : Book 45, Hadith 142English translation : Vol. 5, Book 45, Hadith 4851