أَخْبَرَنَا نَصْرُ بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، فَهَذِهِ وَهَذِهِ سَوَاءٌ الإِبْهَامُ وَالْخِنْصَرُ ‏.‏

It was narrated from Ibn 'Abbas: "This and this are the same: The little finger and the thumb (sahih) Translation Not Available

Book Ref: Sunan An Nisai Book 45 Hadith 4848
Web Ref:  Sunan An Nisai Vol 5 Book 45 Hadith 4852