The Messenger of Allah ﷺ said, "A Muslim is the brother of another Muslim. He does not wrong him, nor does he abandon him. Whoever attends to the needs of his brother, Allah will attend to his needs. Whoever relieves a Muslim of a hardship, Allah will relieve him of one of the hardships of the Day of Resurrection. Whoever conceals the faults of a Muslim, Allah will conceal his faults on the Day of Resurrection."
قال رسول الله ﷺ: المسلم أخو المسلم، لا يظلمه، ولا يسلمه، من كان في حاجة أخيه كان الله في حاجته، ومن فرج عن مسلم كربة، فرج الله عنه بها كربة من كرب يوم القيامة، ومن ستر مسلما ستره الله يوم القيامة.
Bukhari reported it in the Book of Wrongdoings (2442), and Muslim in the Book of Virtue and Kinship Ties (2580), both from the hadith of Layth, from Aqeel, from Ibn Shihab, that Salim informed him that Abdullah bin Umar informed him that the Messenger of Allah ﷺ said, then he mentioned it.