Malik related to me from Nafi from Abdullah ibn Umar that theMessenger of Allah, may Allah bless him and grant him peace, said,"When a slave gives good counsel to his master and worships Allahcorrectly, he has his reward twice over. " (FR)
USC-MSA web (English) reference: Book 54, Hadith 43 (FR)
Arabic reference (FR): Book 54, Hadith 1809 (FR)