Technical note / Defect ('illah): In the manuscripts this name is written "Ubayd bin Abi al-Hakam", so the word "mawla" (freed slave of) was corrupted into "bin Abi", and the word "Abi" dropped out of manuscript (M). In "Dala'il al-Bayhaqi" it came correctly, but its editor added the name of his father on his own, saying: from Ubayd [bin Hunayn] the freed slave of al-Hakam. This is not correct, because all the narrators who narrated it by way of Ahmad bin Abd al-Jabbar, from Yunus bin Bukayr, did not mention Ubayd's father in it but left it unqualified (just Ubayd). This proves that the narration of Yunus bin Bukayr is without the specification (of the father's name).