Musnad Ahmad 32:1009

Ubaydah ibn Humayd narrated to us, from Humayd, from Anas ibn Malik, who said: The Prophet (peace and blessings of Allah be upon him) gave from the spoils of Hunayn to Uyaynah, al-Aqra’, and others. The Ansar said: "Does he give our spoils to those whose blood our swords are dripping with—or whose blood is dripping from our swords?" This reached the Prophet (peace and blessings of Allah be upon him), so he called the Ansar and said: "O assembly of the Ansar, are you not pleased that the people go away with the worldly life, while you go away with Muhammad to your homes?" They said: "Yes, O Messenger of Allah." He said: "By the One in Whose hand is the soul of Muhammad, if the people traveled through a valley, and the Ansar traveled through a mountain pass, I would travel through the mountain pass of the Ansar. The Ansar are my inner garment and my special confidants. And were it not for the Hijrah, I would have been a man from among the Ansar."