عن ابن عمر رضي الله عنهما
أن رسول الله صلى الله عليه وسلم قال: «إن العبد إذا نصح لسيده، وأحسن عبادة الله، فله أجره مرتين»
I heard the Messenger of Allah (sallallahu alayhi wa sallam) saying, “When a slave is sincere to his master and worships Allah well, He will have a double reward.”.
Riyad as-Salihin 1362, Book 12, The Book of Jihad, Hadith 78. 1 min read