What are some of the wisdom and famous sayings that call for unity and the rejection of division?

Islam combated division and prohibited it, and called for unity of word and solidification of ranks, as exemplified by the brotherhood of the Muhajirun and Ansar. This is supported by evidence from the Quran and Sunnah (definition). Among the wisdom and proverbs that convey this meaning are: "A person is only with their brothers, just as the palm grasps with the wrist; there is no good in a severed palm, nor any good in a mutilated forearm," and "Spears, when gathered, refuse to break, but when separated, they break individually," and "A person is little by himself, but much with his brothers."