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. (JA)
USC-MSA web (English) reference: Book 54, Hadith 41 (JA)
Arabic reference (JA): Book 54, Hadith 1807 (JA)