The Prophet (ﷺ) said, "This and this are the same." He meant the little finger and the thumb.
Sahih al-Bukhari Book 87, Hadith 33
← Previous Hadith The daughter of An-Nadr slapped a girl and broke her incisor tooth. They (the relatives of that girl), came to the Prophet (ﷺ) and he gave the order of Qisas (equality in punishment).

Sahih al-Bukhari Book 87, Hadith 32 Next Hadith → I heard the Prophet (saying the same as above Hadith 34).

Sahih al-Bukhari Book 87, Hadith 34