Sahih Muslim 75

Zuhayr ibn Harb narrated to me; he said: Mu'adh ibn Mu'adh narrated to me. (Another chain:) Ubaydullah ibn Mu'adh narrated to us—the wording is his—; my father narrated to us; Shu'bah narrated to us, from Adi ibn Thabit, who said: I heard al-Bara relate from the Prophet (peace and blessings be upon him) that he said concerning the Ansar: ‘None but a believer loves them, and none but a hypocrite hates them. Whoever loves them, Allah loves him; and whoever hates them, Allah hates him.’ Shu'bah said: I asked Adi, ‘Did you hear it from al-Bara?’ He said: ‘He narrated it to me.’