Abu Al-Hasan bin Al-Qattan Al-Fasi: Unknown state
Abu Zar'ah Al-Razi: Trustworthy
Abu 'Abdullah Al-Hakim Al-Naysaburi: Did not hear from 'Umar
Ahmad bin Shu'ayb Al-Nasa'i: Trustworthy
Ahmad bin Salih Al-Jili: Trustworthy
Ibrahim bin Ishaq Al-Harbi: Consensus on his trustworthiness
Ibn Hajar Al-'Asqalani: Trustworthy and he used to narrate a lot
Al-Dhahabi: One of the trustworthy Tabi'een, but he used to conceal and narrate indirectly
Ali bin Al-Madini: Did not meet Ziyad bin Labid
Muhammad bin Sa'd, the scribe of Al-Waqidi: Trustworthy, narrated many hadiths
Authors of Tahrir Taqrib Al-Tahdhib: Trustworthy, he used to conceal and narrate indirectly a lot
Yahya bin Ma'in: Trustworthy