It is narrated from Hazrat Jarir (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The Muhajirun and the Ansar are guardians of one another; the freed ones are from among the Quraysh, and the emancipated ones are from among the Thaqif, and all are guardians of one another until the Day of Resurrection.
Hadith Referenceمسند احمد / تتمہ مُسْنَدِ الْكُوفِيِّينَ / 19218
Hadith Gradingحکم دارالسلام:إسناده صحيح على خطأ فيه، موسي بن عبدالله بن هلال العبسي هو خطأ، والصواب: موسي بن عبدالله، عن عبدالرحمن بن هلال، عن جرير