Ibn 'Umar (May Allah bepleased with them) reported:
Messenger of Allah ﷺ said, "A Muslim is a brother of (another) Muslim, he neither wrongs him nor does hand him over to one who does him wrong. If anyone fulfills his brother's needs, Allah will fulfill his needs; if one relieves a Muslim of his troubles, Allah will relieve his troubles on the Day of Resurrection; and if anyone covers up a Muslim (his sins), Allah will cover him up (his sins) on the Resurrection Day".

[Al-Bukhari and Muslim].

وعن ابن عمر رضي الله عنهما أن رسول الله ﷺ قال: "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 مسلمًا ستره الله يوم القيامة" ((متفق عليه)) .