Some say sadaqat al-fitr should be given on behalf of a Christian slave

Hazrat Umar bin Abdul Aziz said that a Muslim person will also pay Sadaqat al-Fitr on behalf of his Christian slave.

Hazrat Awza'i says that I have come to know that Hazrat Abdullah bin Umar (may Allah be pleased with them) used to pay Sadaqat al-Fitr on behalf of his Christian slave as well.

It is narrated from Hazrat bin Musa that Hazrat Ata was asked regarding Jewish and Christian slaves whether Sadaqat al-Fitr should be paid on their behalf? He replied, "Yes."

A statement similar to that of Umar bin Abdul Aziz is also narrated from Ibrahim.

Hazrat Ata says that when you have some Christian slaves who are not for trade, then also pay Sadaqat al-Fitr on their behalf.