The Prophet ﷺ said, "When a servant gives sincere counsel to his master and worships his Lord well, he receives a double reward."
حدثنا يحيى عن عبيد الله عن نافع
عن النبي ﷺ قال إذا نصح العبد لسيده وأحسن عبادة ربه له الأجر مرتين
Its isnad is sahih, and it is a repeat of 4673.