وعنه قال: قال رسول الله صلى الله عليه وسلم: «إذا مات ابن آدم انقطع عمله إلا من ثلاث: صدقة جارية، أو علم ينتفع به، أو ولد صالح يدعو له»
The Messenger of Allah (sallallahu alayhi wa sallam) said, “When a man dies, his deeds come to an end except for three things: Sadaqah Jariyah (ceaseless charity); a knowledge which is beneficial, or a virtuous descendant who prays for him (for the deceased).”.
Riyad as-Salihin 1383, Book 13, The Book of Knowledge, Hadith 8. 1 min read