Musannaf Ibn Abi Shaybah 28886 — A nail that turns black

Ibn Jurayj said: Abd al-Aziz bin Umar told me that the commanders of the armies and the people of opinion reached a consensus for Umar bin Abd al-Aziz that when a nail is pulled out and then becomes damaged, or falls off, or turns black, the compensation for it is one tenth of the blood money of a finger, that is, ten dinars.