Sayyiduna Anas (may Allah be pleased with him) says that the Prophet Muhammad (peace and blessings be upon him) saw (Ansari) women and children coming from a wedding, so the Prophet Muhammad (peace and blessings be upon him) stood up straight and said: "By Allah! I love you more than all people." He said this three times.
Sayyiduna Anas (may Allah be pleased with him) narrates in one narration that an Ansari woman came to the Prophet Muhammad (peace and blessings be upon him) carrying her child. The Prophet (peace and blessings be upon him) spoke to her and then said: "By Him in Whose hand is my soul, indeed I love you people the most." He said this twice.
Sayyiduna Zaid bin Arqam (may Allah be pleased with him) says that the Ansar said, "O Messenger of Allah! Every prophet has followers, and we are your followers. Now pray for those who follow us, that Allah may include them among us." So the Prophet (peace and blessings of Allah be upon him) prayed for them.