Love for the Ansaar:

Hazrat ‘Aamir (rahimahullah), the son of Hazrat Sa’d (radhiyallahu ‘anhu), narrates the following:

I once said to my father, “O my beloved father! I notice that you show the tribe of the Ansaar more love and reverence than you show other people (besides the Muhaajireen, as the rank of the Muhaajireen is greater than the Ansaar, and Hazrat Sa’d (radhiyallahu ‘anhu) was from the Muhaajireen).”

Hazrat Sa’d (radhiyallahu ‘anhu) asked me, “O my son! Are you unhappy with this?” I replied, “No! However, I am amazed over the manner in which you treat them.”

Hazrat Sa’d (radhiyallahu ‘anhu) then said, “I heard Rasulullah (sallallahu ‘alaihi wasallam) mention, ‘Only a true believer will have love for the Ansaar, and only a hypocrite will harbor enmity for the Ansaar.”

(Usdul Ghaabah 2/310)