It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: If people were walking in one valley and the Ansar in another valley, I would walk with the Ansar in their valley. If there had been no migration, I would have been one of the Ansar. Hazrat Abu Huraira (may Allah be pleased with him) said: May my father and mother be sacrificed for him, he (peace and blessings be upon him) did no injustice (in saying this); they gave him shelter and supported him.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10063