On his father's authority, said that his grandfather reported the Messenger of Allah ﷺ said: The blood-wit for a man who makes a covenant is half of the blood-wit for a free man. Abu Dawud said: It has been transmitted by Usamah b. Zaid al-Laithi and 'Abd al-Rahman b. al-Harith on the authority of 'Amr b. Suh'aib in similar manner.  

عَنِ النَّبِيِّ ﷺ قَالَ دِيَةُ الْمُعَاهِدِ نِصْفُ دِيَةِ الْحُرِّ