وعن أبي الدرداء رضي الله عنه أنه سمع رسول الله صلى الله عليه وسلم يقول‏:‏ ‏"‏ما من عبد مسلم يدعو لأخيه بظهر الغيب إلا قال الملك ولك بمثل‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

Abud-Darda' (May Allah be pleased with him) reported

The Messenger of Allah (ﷺ) said, "The supplication of a Muslim for his (Muslim) brother in his absence will certainly be answered. Everytime he makes a supplication for good for his brother, the angel appointed for this particular task says: 'A meen! May it be for you, too'."[Muslim].