In my recollection he lived on until 149 AH, and Ibn Ḥibbān’s comment on that point has already been quoted.
Section: The tier of narrators named Ḥajjāj
Several transmitters bear this name; they appear in the chains of transmission, and confusion can arise because of the shared designation.
28 – Ḥajjāj ibn Abī ʿUthmān al-Ṣawwāf (Bukhārī, Muslim)
A Basran, reliable, and well-known.
Died in 143 AH.
Among those who reported from him are the two Ḥammāds, al-Qaṭṭān, Rawḥ, and a number of others.
The earliest authority he transmits from is al-Ḥasan.
29 – Ḥajjāj ibn Abī Zaynab al-Wāsiṭī (Muslim, Abū Dāwūd, al-Nasāʾī, Ibn Mājah)
Truthful (ṣadūq).
He narrates from Abū ʿUthmān al-Nahdī.
Those who narrated from him include Hushaym and Yazīd.
His ḥadīths are classed as ḥasan, although he has been considered somewhat weak.
Nevertheless, Muslim included his reports.
He died around 140 AH.