Musnad Ahmad 32:316

Yahya narrated to us, Humayd narrated to us, from Anas, from the Prophet (peace and blessings of Allah be upon him), who said: "I entered Paradise and heard a rustling sound in front of me. I said, 'What is this?' They said, 'Al-Ghumaysa' bint Milhan, the mother of Anas ibn Malik.'"