Mukhtasar Bukhari

Narrated from Ummul Momineen Aisha Siddiqa (may Allah be pleased with her) that she heard the voice of a man who was seeking permission to enter the house of Ummul Momineen Hafsa (may Allah be pleased with her). Ummul Momineen Aisha (may Allah be pleased with her) said: "O Messenger of Allah, indeed this (non-mahram) man wants to enter your house." So the Prophet Muhammad (peace and blessings be upon him) said: "I know that this is so-and-so, who is Hafsa's (may Allah be pleased with her) foster uncle." Aisha (may Allah be pleased with her) asked: "If so-and-so, who was my uncle through milk relationship, were alive, would I appear before him?" The Prophet (peace and blessings be upon him) said: "Yes! The relationships that are forbidden by lineage are also forbidden by suckling (milk relationship)."