Riyad as-Salihin, Book 12, Hadith 1364 (In-Book)

Abu Musa Al-Ash'ari (May Allah be pleased with him) reported: The Messenger of Allah 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].

وعن أبي موسى الأشعري قال‏:‏ قال رسول الله صلى الله عليه وسلم ‏:‏ ‏ "‏المملوك الذي يحسن عبادة ربه ويؤدي إلى سيده الذي عليه من الحق، والنصيحة والطاعة له أجران‏" ‏ ‏(‏‏(‏رواه البخاري‏)‏‏)‏‏.‏

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