And Abu Hurayrah, may Allah be pleased with him, when he was governor of Madinah, said: “By Allah, I shall certainly throw it between your shoulders,” concerning one who prevented his neighbor from placing timber on top of his wall. (1)
In cases of accidental killing, it is due in fifths: eighty from the four categories mentioned, and twenty male camels in their second year, ...
His statement, “In cases of accidental killing, it is due in fifths: eighty from the four categories mentioned, and twenty male camels in their second year”: “In fifths” is an adverbial qualifier.
This blood-money involves a concession, because males have been included in it, and people generally desire males less than females. Thus, the blood-money for accidental killing consists of twenty bint makhad, twenty bint labun, twenty hiqqah, twenty jadha'ah, and twenty male camels in their second year—that is, males each one year old.
This division applies where a full blood-money is due. But if only part of the blood-money is due, is that part treated in the same manner as the whole? Yes. For example, if a wound exposing the bone is inflicted deliberately, then five camels are due: one bint makhad, the second a bint labun, the third a hiqqah, the fourth a jadha'ah, and the fifth of intermediate value, proportionate to the valuation.
But if the wound exposing the bone was inflicted accidentally, then it is divided into fifths: one bint makhad, the second a bint labun, the third a hiqqah, the fourth a jadha'ah, and the fifth a male camel in its second year.