قَالَ ﷺ: «مَنْ صَلَّ عَلَيَّ صَلاةً صَلَّ اللهُ عَلَيْهِ بِهَا عَشَراً»

The Prophet \pbuh said: “Whoever sends a prayer upon me, Allāh sends ten upon him.”

Référence: The Prophet \pbuh said: “Whoever sends a prayer upon me, Allāh sends ten upon him.” Muslim (#408, 1/288).