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"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏

Abu Musa Al-Ash'ari (May Allah be pleased with him) reported

The Messenger of Allah (ﷺ) said, "A slave who worships his Rubb (Allah) well and discharges efficiently and faithfully the duties which are assigned to him by his master, will have a double reward."[Al-Bukhari].