"…the smoke, in one night, seventy thousand angels will seek forgiveness for him in the morning." (1)

This is a strange hadith; we do not know it except through this chain. And 'Umar ibn Abi Khath'am is considered weak. Muhammad said: He is a denier of hadith (munkar al-hadith).

3109 - Nasr ibn 'Abd al-Rahman al-Kufi narrated to us, saying: Zayd ibn Hubab narrated to us, from Hisham Abu al-Miqdam, from al-Hasan, from Abu Hurayrah, who said: The Messenger of Allah, peace and blessings be upon him, said: "Whoever recites Ha Mim al-Dukhan on the night of Friday, he will be forgiven." (2)

This is a hadith we do not know except through this chain, and Hisham Abu al-Miqdam is considered weak, and al-Hasan did not hear from Abu Hurayrah. This is what Ayyub, Yunus ibn 'Ubayd, and 'Ali ibn Zayd said.

9 - Chapter on what has been narrated regarding Surah al-Mulk

3110 - Muhammad ibn 'Abd al-Malik ibn Abi al-Shawarib narrated to us, saying: Yahya ibn 'Amr ibn Malik al-Nukri narrated to us, from his father, from Abu al-Jawza'—

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(1) Its chain is weak due to the weakness of Sufyan ibn Waki' and 'Umar ibn Abi Khath'am.
It was also recorded by Ibn 'Adi in "Al-Kamil" 5/1720, and Ibn al-Jawzi in "Al-Mawdu'at" 1/248.
(2) Its chain is weak; Hisham Abu al-Miqdam — who is Ibn Ziyad — is weak, and al-Hasan did not hear from Abu Hurayrah.
It was also recorded by Abu Ya'la (6224) and (6232), and Ibn al-Sunni in "'Amal al-Yawm wa al-Laylah" (679).