وَحَدَّثَنِي مَالِكٌ، أَنَّهُ بَلَغَهُ أَنَّ عُمَرَ بْنَ الْخَطَّابِ، كَانَ يَذْهَبُ إِلَى الْعَوَالِي كُلَّ يَوْمِ سَبْتٍ فَإِذَا وَجَدَ عَبْدًا فِي عَمَلٍ لاَ يُطِيقُهُ وَضَعَ عَنْهُ مِنْهُ ‏.‏

Malik related to me that he heard that Umar ibn al-Khattab wentto the villages every Saturday. If he found a slave doing work whichhe was not capable of doing, he lightened it for him. Translation Not Available

Book Ref: Muwatta Imam Malik Book 54 Hadith 1807
Web Ref:  Muwatta Imam Malik Book 54 Hadith 41