I heard the Prophet (ﷺ) saying (or the Prophet (ﷺ) said), "None loves the Ansar but a believer, and none hates them but a hypocrite. So Allah will love him who loves them, and He will hate him who hates them."
Sahih al-Bukhari Book 63, Hadith 8
← Previous Hadith The Ansar said (to the Prophet (ﷺ) ), "Please divide the date-palm trees between us and them (i.e. emigrants)." The Prophet (ﷺ) said, "No." The Ansar said, "Let them (i.e. the emigrants) do the labor for us in the gardens and share the date-fruits with us." The emigrants said, "We accepted this."

Sahih al-Bukhari Book 63, Hadith 7 Next Hadith → The Prophet (ﷺ) said, "The sign of Belief is to love the Ansar, and the sign of hypocrisy is to hate the Ansar."

Sahih al-Bukhari Book 63, Hadith 9