Grading: Its chain is "very weak" because of Dirar bin Surad; al-Dhahabi declared it defective in "al-Talkhis" and said: "He is halik (ruined, i.e. extremely weak)."
Technical note / Defect ('illah): We say: although he has been corroborated, there is a disagreement on Zayd bin Aslam over whether it is connected or mursal, so it is weak because of the inconsistency (idtirab) in its chain.

Reference / Source: Al-Tabarani narrated it in "al-Mu'jam al-Saghir" (927) - and from him Abu Nu'aym in "Tarikh Asbahan" (2/ 265) - via Muhammad bin al-Harith al-Makhzumi al-Madani, from Abu Mus'ab al-Zuhri, from 'Abd al-'Aziz al-Darawardi, from Safwan bin Sulaym, from 'Ata' bin Yasar, from Abu Sa'id al-Khudri (may Allah be pleased with him).
Technical note / Defect ('illah): Here the narrator put Safwan bin Sulaym in place of Zayd bin Aslam. Al-Tabarani said after it: "No one narrated it from Safwan except al-Darawardi, and no one from him except Abu Mus'ab; Muhammad bin al-Harith is alone in it, and I know of no one who mentioned him except favourably."

Note / Clarification: This narration was narrated by a group of trustworthy narrators who did not mention Abu Sa'id al-Khudri (may Allah be pleased with him) in it:

Reference / Source: It was narrated thus by al-Shafi'i (as in al-Bayhaqi's "Ma'rifat al-Sunan wa-l-Athar" 12745); by Sa'id bin Mansur in "al-Sunan" (163); by Abu Dawud in "al-Marasil" (361) - and via him al-Bayhaqi in "al-Sunan al-Kubra" (6/ 212-213) - from 'Abdullah bin Maslamah; and by al-Daraqutni (4156) and al-Bayhaqi in "Ma'rifat al-Sunan" (12746) via Abu al-Jamahir Muhammad bin 'Uthman al-Tanukhi. All four (al-Shafi'i, Sa'id, 'Abdullah, Abu al-Jamahir) narrate it from 'Abd al-'Aziz bin Muhammad al-Darawardi, from Zayd bin Aslam, from 'Ata' bin Yasar as "mursal"; they did not mention Abu Sa'id al-Khudri.

Reference / Source: Likewise, al-Tahawi narrated it in "Ma'ani al-Athar" (4/ 395) via Hisham bin Sa'd; al-Tahawi (4/ 396) and al-Bayhaqi (6/ 212) via Muhammad bin Mutarrif; and al-Tahawi (4/ 396) and al-Bayhaqi (6/ 212) via Muhammad bin 'Abd al-Rahman bin Mujabbar. All three (Hisham, Muhammad bin Mutarrif, Muhammad bin 'Abd al-Rahman) narrate it from Zayd bin Aslam, from 'Ata' bin Yasar as "mursal"; Abu Sa'id is not mentioned in it either.

Reference / Source: 'Abd al-Razzaq (19109) narrated it from Ma'mar; Ibn Abi Shaybah (11/ 262), al-Tahawi (4/ 395) and al-Daraqutni (4157) via Hisham bin Sa'd; and al-Tahawi (3954) and al-Daraqutni (4157) via Hafs bin Maysarah and 'Abd al-Rahman bin Zayd. All four (Ma'mar, Hisham, Hafs, 'Abd al-Rahman) narrate it from Zayd bin Aslam as "mu'dal" (with two links dropped). Neither 'Ata' bin Yasar nor Abu Sa'id is mentioned in it.