[Two men jointly commit accidental killing]

The answer – and Allah is the One who grants success – is that what is required of the two men is one blood-money (diyah), to be paid to the family of the slain man, and each of the two men must perform an expiation (kaffārah).

Source: Min Thimār al-ʿIlm wa al-Ḥikmah vol.2