The Messenger of Allah ﷺ said, "Whoever sends one blessing upon me, Allah sends ten blessings upon him, ten of his sins are wiped away, and he is raised ten degrees."
أخبرنا إسحق بن منصور قال حدثنا محمد بن يوسف قال حدثنا يونس بن أبي إسحق عن بريد بن أبي مريم قال حدثنا
قال رسول الله ﷺ من صلى علي صلاة واحدة صلى الله عليه عشر صلوات وحطت عنه عشر خطيئات ورفعت له عشر درجات
[Its chain of transmission is sahih] Ahmad narrated it, 3/102, from the hadith of Yunus, in abridged form, and it is in Al-Kubra, hadith no. 1220, and Ibn Hibban graded it sahih, hadith no. 2390, as did Hakim, 1/550, and Dhahabi, and the hadith has other paths of transmission.