Ruling if a Group of Slaves Is Made Mukatab and Some Die

Ibrahim was asked: If a group of slaves is made mukatab (contracted for manumission) and some of them die, what is the ruling? He replied: The remaining slaves should collectively try to fulfill the amount of the contract.

Hazrat Hafs bin Ghiyath narrates that I asked Hazrat Umar what was Hasan's opinion regarding if a group of slaves is made mukatab (contracted for freedom) and some of them die, then what is the ruling? He replied that their share will be forfeited.

Hazrat Sha'bi says that a man made two of his slaves mukatab, and then one of them died, so his share will be forfeited.

Hazrat Hakam was asked: If a group of slaves is made mukatab and some of them die, what is the ruling? He replied: Their share will be forfeited.