It is narrated from Ibn Umar, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "A Muslim is the brother of a Muslim; he neither oppresses him nor hands him over (to the oppressor). Whoever is engaged in fulfilling the need of his brother, Allah will fulfill his need, and whoever removes a difficulty from a Muslim, Allah will remove one of the difficulties of the Day of Resurrection from him. And whoever conceals (the faults of) a Muslim, Allah will conceal his faults on the Day of Resurrection." Agreed upon.