The tradition mentioned above by Rawh bin Ubadah from Saeed bin Abu 'Arubah. In this version he did not mention the words "the slave should be required to work. " If has also been transmitted by Jarir bin Hazim and Musa bin Khalaf from Qatadah through the chain of Yazid bin Zurai' and to the same effect. In this version they mentioned the words "the slave should be required to work"