Musannaf Ibn Abi Shaybah

Hazrat Mughira and Hazrat Hammad state that it is narrated from Ibrahim regarding two such slaves, one of whom gouged out the eye of his companion. He said: If the value of both is equal, then an eye will be gouged out in exchange for an eye, and if the value of one is greater than the other, then the one with the higher value will be returned to the one with the lower value.