Abu Hurayrah (may Allah be pleased with him), in the hadith about the People of the Suffah, says: I came following the Prophet (peace and blessings be upon him) and sought permission, and I was given permission. I found milk in a cup, and he (peace and blessings be upon him) asked: "Where has this come from?" They said: "So-and-so has given it as a gift." He (peace and blessings be upon him) said: "O Abu Hurayrah! Go and call the People of the Suffah." I went, and the People of the Suffah sought permission and entered the house to him (peace and blessings be upon him). Then he narrated the rest of the long hadith.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17673