Sunan at-Tirmithiy كتاب البر والصلة باب ما جاء فى الحسد
The Messenger of God, peace and blessings of God be upon him, said, “Do not sever [kinship ties], do not turn your backs on one another, do not hate one another, do not be envious of one another, and be brothers, bondsmen of God! It is not permissible for a Muslim to estrange his (1) brother for more than three [days].” Footnotes: (1) Masculine nouns and pronouns are generally used in Arabic as a means for referring to both men and women when the meaning is left general and is not otherwise specified. Click on ḥadīth to read more