Sunan Abi dawud:3959 Chapter: If A Mukathib Pays Part Of His Contract Of Manumission Then Becomes Incapacitated Or Dies Book 31, Hadith 34

The tradition mentioned above has also been transmitted by Abu Qilabah through a different chain of narrators on the authority of ‘Imran b. Husain to the same effect. But in this version he did not mention “He spoke severely of them.”