Grading: (1) Its chain is "sahih". (Al-A'mash is Sulayman bin Mihran, and Ibrahim al-Taymi is Ibn Yazid bin Sharik.)

Reference / Source: It was narrated by al-Bayhaqi in "Shu'ab al-Iman" (821), and via him by Ibn 'Asakir in "Tarikh Dimashq" (33/ 168), by way of Abu 'Amir al-'Aqadi, from Sufyan al-Thawri, with this chain.

Technical note / Defect ('illah): 'Abdullah bin Wahb narrated it in "al-Jami'" (28) from 'Abd al-Rahman bin Mahdi, from Sufyan al-Thawri, from al-A'mash, from Ibrahim al-Taymi, from "Aslam". He mentioned "Aslam" in place of (Ibrahim's) father. Our strong opinion is that the word "Aslam" is a distortion of "abihi" (his father), because in al-Thawri's narration the mention of Ibrahim al-Taymi's father, "Yazid bin Sharik", is what is well known, as in the narration of the author (al-Hakim) and al-Bayhaqi.

Reference / Source: Al-Bayhaqi (822) narrated it by way of Muhadir bin al-Muwarri', from al-A'mash, from Ibrahim al-Taymi, from his father, from Ibn Mas'ud.

Reference / Source: It was narrated by Ibn Abi Shaybah (13/ 288), Ya'qub bin Sufyan in "al-Ma'rifah wa al-Tarikh" (2/ 548, 549), Abu Dawud in "al-Zuhd" (149), al-Bayhaqi (819) and Ibn 'Asakir (33/ 168, 169) by way of Abu Mu'awiyah (Muhammad bin Khazim); by Ibn Abi Shaybah (13/ 88) from Waki' bin al-Jarrah; by Abu Dawud (140) by way of Jarir bin 'Abd al-Hamid; and by Abu Nu'aym in "al-Hilyah" (1/ 133) and Ibn 'Asakir (33/ 167-168) by way of Shu'bah bin al-Hajjaj. All of these narrate it from al-A'mash, from Ibrahim al-Taymi, from al-Harith bin Suwayd, from Ibn Mas'ud.
Important point: (Note that) al-Harith is among the senior companions of Ibn Mas'ud.

Reference / Source: It was narrated by Ibn Abi Shaybah (13/ 289) by way of Qays bin Abi Hazim; by Ibn Wahb in "al-Jami'" (28), Ahmad in "al-Zuhd" (859), al-Husayn bin al-Hasan al-Marwazi in his "Ziyadat al-Zuhd" (490), Ya'qub bin Sufyan (2/ 548-549), Ibn Abi al-Dunya in "al-Mutamannin" (19), al-Baghawi in "al-Ja'diyyat" (1729), Abu Nu'aym in "al-Hilyah" (8/ 314), al-Bayhaqi in "al-Shu'ab" (6769) and Ibn 'Asakir (33/ 169) by way of Abu Wa'il Shaqiq bin Salamah; and by Ahmad in "al-Zuhd" (858), Ya'qub bin Sufyan (2/ 549), al-Bayhaqi (820) and Ibn 'Asakir (33/ 169) by way of Humayd bin Hilal. All three of them (Qays, Abu Wa'il and Humayd) narrate it similarly from Ibn Mas'ud.