Sahih Muslim
74.01

It is reported on the authority of Anas that the Messenger of Allah (may peace and blessings Be upon him) observed:The sign of a hypocrite is the hatred against the Ansar and the sign of a believer is the love for the Ansar

74.02

It is narrated on the authority of Anas that the Apostle (may peace and blessings be upon him) said:The love of the Ansar is the sign of faith and hatred against them is the sign of dissemblance