faqih-2919Vol. 2, p. 443
أَ وَ لَيْسَ قَدْ عَتَقَتْ بِوَلَدِهَا[3] تَحُجُّ عَنْهَا.
I sent a message to Abu Abdullah (as) asking about the mother of a woman who was a concubine (umm walad). She had passed away, and the woman wanted to perform Hajj on her behalf. Imam (as) said: "Did she not gain her freedom through her child? She may perform Hajj on her behalf."