Angles make duʿāʾ for the one who makes duʿāʾ for others

the Messenger of Allah ﷺ said, “There is no believing servant who supplicates for his brother behind his back except that the Angels say: May the same be for you.”

قَالَ رَسُولُ اللَّهِ ﷺ «مَا مِنْ عَبْدٍ مُسْلِمٍ يَدْعُو لأَخِيهِ بِظَهْرِ الْغَيْبِ إِلاَّ قَالَ الْمَلَكُ وَلَكَ بِمِثْلٍ.»