Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "If there had been no migration, I would have been one of the Ansar. If people were in one mountain pass and the Ansar were in another mountain pass, I would be with the Ansar in their mountain pass."
Hadith Referenceصحیح ابن حبان / كتاب إخباره ﷺ عن مناقب الصحابة رجالهم ونسائهم بذكر أسمائهم رضوان الله عليهم أجمعين / 7269
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الصحيحة» (1768).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين