Abu Al-Walid Al-Baji: Trustworthy
Abu Abd Allah Al-Hakim An-Naysaburi: He mentioned him among those who are authentically reported to have practiced Tadlis
Ahmad ibn Hanbal: Sheikh, Trustworthy
Ahmad ibn Shuayb An-Nasa'i: Trustworthy
Ibn Hajar Al-Asqalani: Trustworthy, he practiced Tadlis
Adh-Dhahabi: Trustworthy
Uthman ibn Abi Shaybah Al-Absi: Authenticated
Muhammad ibn Sa'd Kathir Al-Waqidi: Trustworthy, God willing
Authors of Tahrir Taqrib At-Tahdhib: Trustworthy, and his saying 'he practiced Tadlis' needs further examination, as the Imams declared him trustworthy without attributing Tadlis to him except for Al-Hakim
Yahya ibn Ma'in: Trustworthy, and once: He was asked: Is Hammad ibn Abi Sulayman more preferable to you or Shubak? He said: Shubak is more preferable to me and Hammad is trustworthy