Hisn al-Muslim · Book 1 · Hadith 223
وَقَالَ صلى الله عليه وسلم: (مَا مِنْ أَحَدٍ يُسَلِّمُ عَلَيَّ إِلاَّ رَدَّ اللَّهُ عَلَيَّ رُوحِيَ حَتَّى أَرُدَّ عَلَيْهِ السَّلاَمَ)
-- The Prophet (ﷺ) said: "No one sends greetings (or prayers of peace) upon me but Allah returns my soul to me so that I may return his greetings." Reference: Abu Dawud (no. 2041). Al-Albani graded it good in Sahih Ab…