Yahya related to me from Malik from Yahya ibn Said that a mansaid to Abu Musa al-Ashari, "I drank some milk from my wife's breastsand it went into my stomach." Abu Musa said, "I can only but thinkthat she is haram for you." Abdullah ibn Masud said, "Look at whatopinion you are giving the man." Abu Musa said, "Then what do yousay?" Abdullah ibn Masud said, "There is only kinship by suckling inthe first two years."Abu Musa said, "Do not ask me aboutanything while this learned man is among you."
USC-MSA web (English) reference: Book 30, Hadith 14
Arabic reference: Book 30, Hadith 1289