A Muslim is a Brother of another Muslim
Ibn Umar (radi Allahu anhum) reported that the Messenger of Allah (sal Allahu alaihi wa sallam) said, “A Muslim is a brother of another Muslim. So he should not oppress him nor should he hand him over to (his satan or to his self which is inclined to evil). Whoever fulfills the needs of his brother, Allah will fulfill his needs; whoever removes the troubles of his brother, Allah will remove one of his troubles on the Day of Resurrection; and whoever covers up the fault of a Muslim, Allah will cover up his fault on the Day of Resurrection.”
[Sahih al-Bukhari and Muslim]
This Hadith is extremely important for the reason that it advises Muslims to live like family members. It says that one does not like to subject one’s own son, brother, etc, to suppression, nor leaves him helpless in trouble, but helps him when he is in need of it, endeavours to relieve him of hardship and admonishes him when he does anything wrong. Almighty Allah is pleased with such behaviour and gives him best reward for it in this world and the next.
And Allah Knows Best!