Grading: This narration is sahih as mawquf and da'if as marfu'. There is no harm in the narrators of this isnad (la ba'sa bihim). Fahd bin Sulayman (who is al-Nahhas) was declared trustworthy by Ibn Yunus; Ibn Abi Hatim said: I wrote down his fawa'id (notes), but it was not destined for us to hear from him. Ibn al-Qattan al-Fasi said in "al-Wahm wa al-Iham" (3/ 571): His probity is not established to the degree that what he alone narrates could be accepted from him, even though he is well known. Technical note / Defect ('illah): Al-Daraqutni said in "al-Sunan": No one other than Fahd narrated it as marfu'; the correct view is that it is mawquf. We say: this error may have come from his shaykh Musa bin Dawud, for he has some errors, and that is what the author (al-Hakim) indicated after the hadith, where he said: "Musa bin Dawud is alone in narrating it with this isnad".

Important point: This report was narrated by a group of senior scholars from Sufyan al-Thawri, and they kept it mawquf; likewise others besides Sufyan narrated it and kept it mawquf, as will come.

Reference / Source: It was recorded via Fahd bin Sulayman by al-Tahawi in "Sharh Mushkil al-Athar" (3727), Abu Ishaq al-Muzakki in "al-Muzakkiyat" (165) and al-Daraqutni (3105).

Reference / Source: It was recorded by Abd al-Razzaq (18987) — and via him al-Daraqutni (3106) —, by Ibn Abi Shaybah (9/ 484) from Yahya al-Qattan, and by Ibn al-Mundhir in "al-Awsat" (9056) via Abd Allah bin al-Mubarak. All three (Abd al-Razzaq, Yahya al-Qattan and Ibn al-Mubarak) narrate it from Sufyan al-Thawri, with this same isnad, as the statement of Ibn Abbas (may Allah be pleased with them both) (mawquf).

Reference / Source: It was recorded in separate parts by Abd al-Razzaq (18987) — and via him al-Daraqutni (3106) — from Ma'mar; by Ibn Abi Shaybah (10/ 19) via Shu'bah; and by al-Daraqutni (3107) via Ibn Jurayj. All three (Ma'mar, Shu'bah, Ibn Jurayj) narrate it from Amr bin Dinar in the same way, as mawquf.

Technical note / Defect ('illah): Ubayd Allah bin al-Nu'man al-Dallal contradicted them, in al-Daraqutni (3108), narrating it from Abu Asim al-Nabil, from Ibn Jurayj, from Amr bin Dinar, as "marfu'". Grading: After it al-Daraqutni said: The mawquf narration before it is more authentic than this one. Ibn al-Qattan said in "al-Wahm wa al-Iham" (3/ 572): The condition of this Ubayd Allah is not known, meaning that no one declared him trustworthy.

Reference / Source: It was recorded by Abd al-Razzaq (13617) via Ayyub, from Mujahid, as mawquf.

General principle: For further detail, see Ibn al-Mundhir's book "al-Awsat" (12/ 351).