(44, 45) باب عَقْلِ الأَصَابِعِ
It was narrated from Ibn 'Abbas that the Propher said:
"this and this are the same,": meaning the little finger and the thumb. (JA)
Reference (JA): Sunan an-Nasa'i 4847 (JA)
In-book reference (JA): Book 45, Hadith 142 (JA)
English translation (JA): Vol. 5, Book 45, Hadith 4851 (JA)