(25) باب أَجْرِ الْخَادِمِ إِذَا تَصَدَّقَ بِأَمْرِ صَاحِبِهِ غَيْرَ مُفْسِدٍ
Narrated Abu Musa:
The Prophet (ﷺ) said, "An honest Muslim storekeeper who carries out the orders of his master and pays fully what he has been ordered to give with a good heart and pays to that person to whom he was ordered to pay, is regarded as one of the two charitable persons."
Reference: Sahih al-Bukhari 1438
In-book reference: Book 24, Hadith 41
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 24, Hadith 519