It was narrated from 'Abdul-Muhaimin bin 'Abbas bin Sahl bin Sa'd from his father, from his grandfather, that:
The Messenger of Allah said: "The Ansar are an inner garment and the people are an outer garment. If the people were to head towards one valley or a narrow mountain pass and the Ansar towards another, I would travel to the valley of the Ansar, and were it not for the Hijrah, I would have been a man from among the Ansar."
English reference: Vol. 1, Book 1, Hadith 164
Arabic reference: Book 1, Hadith 169