The Prophet ﷺ said, "The Muslim is the brother of the Muslim. He does not wrong him, nor does he abandon him. Whoever attends to the need of his brother, Allah will attend to his need. Whoever relieves a Muslim of a distress, Allah will relieve him of one of the distresses of the Day of Resurrection. Whoever conceals the faults of a Muslim, Allah will conceal his faults on the Day of Resurrection."
حدثنا قتيبة بن سعيد حدثنا الليث عن عقيل عن الزهري
عن النبي ﷺ قال المسلم أخو المسلم لا يظلمه ولا يسلمه من كان في حاجة أخيه فإن الله في حاجته ومن فرج عن مسلم كربة فرج الله عنه بها كربة من كرب يوم القيامة ومن ستر مسلما ستره الله يوم القيامة
Muslim relates it in the Book of Righteousness and Maintaining Ties, Chapter on the Prohibition of Wrongdoing, Hadith 2580, from Qutayba, and Bukhari in the Book of Wrongs, Chapter on a Muslim not wronging another Muslim nor forsaking him, Hadith 2442, from the hadith of Layth bin Saad, with the same chain.