Musa bin Salamah Hudhali narrates that I and Sinan bin Salamah went to perform ‘Umrah. When we camped in the valley of Batha, I said,“Let us go to Ibn Abbas (may Allah be pleased with them both) and talk to him.”I said to Ibn Abbas (may Allah be pleased with them both),“My respected mother is in Egypt and I participate in battles here. If I free a slave on her behalf, will she receive its reward even though she is not with me?”Ibn Abbas (may Allah be pleased with them both) said,“Shall I not tell you something even more astonishing than this? I asked the wife of Sinan bin ‘Abd al-Juhani to ask the Messenger of Allah (peace and blessings be upon him) about my issue: her mother had passed away and had not performed Hajj. If she performs Hajj on her behalf, will it suffice for her?”The Prophet (peace and blessings be upon him) said: ‘Yes. If her mother had a debt and she paid it off on her behalf, would it not suffice for her? She should perform Hajj on behalf of her mother.’”