Hisn al-Muslim
-- The Prophet (ﷺ) said: "Whoever prays for Allah's blessings upon me once, will be blessed for it by Allah ten times." Reference: Muslim 1/288.
قَالَ النَّبِيُّ صلى الله عليه وسلم: (مَنْ صَلَّى عَلَيَّ صَلاَةً صَلَّى اللَّهُ عَلَيْهِ بِهَا عَشْراً)
Reference