It is narrated from Umm al-Fadl (may Allah be pleased with her) that a man from Banu Amir bin Sa'sa'ah said: O Prophet of Allah, does drinking milk once establish the prohibition? He (peace and blessings be upon him) said: "No."
Muslim (may Allah have mercy on him) narrated it in the Sahih from Muhammad bin al-Muthanna, and he also recorded it through another chain from Hammam.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرضاع / 15630