Rabah bin Abdul Rahman bin Huwaytib reports his grandmother's statement that she heard the Prophet (peace and blessings be upon him) say: "The one who does not believe in me does not believe in Allah, and the one who does not love the Ansar does not believe in me."
Abdullah bin Ahmad recorded it, and he gave a biographical entry for this woman. Perhaps this woman
heard this narration directly from the Prophet (peace and blessings be upon him) herself and also heard it from her father, so she narrated it one way once and another way another time; and Allah knows best. The chain of this narration contains the narrator Abu Thifal, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16524