From Sahih Muslim (Hadith 6539):
This hadith has been narrated on the authority of A'mash with the same chain of transmit ters (and the words are):" Don't sever relations of kinship, don't bear enmity against one another, don't bear aversion against one another and don't feel envy against the other and live as fellow-brothers as Allah has commanded you
Reference: Muslim 6539