Narated By ‘Abdullah bin Umar :
Allah’s Apostle said, “A Muslim is a brother of another Muslim, so he should not
oppress him, nor should he hand him over to an oppressor. Whoever fulfilled the needs of his brother, Allah will
fulfil his needs; whoever brought his (Muslim) brother out of a discomfort, Allah will bring him out of the discomforts
of the Day of Resurrection, and whoever screened a Muslim, Allah will screen him on the Day of Resurrection.”
[Volumn 3, Book 43, Hadith 622]