The Peak of Eloquence · Hadith 1373 (#Passage #182)
Chapter 34 | To Muhammad ibn Abi Bakr after learning that he had taken over the position of Malik al-Ashtar as the governor of Egypt after the latter died
ومن كتاب له (عليه السلام) إلى محمد بن أبي بكر لما بلغه توجّده من عزله بالأشتر عن مصر، ثم توفي الأشتر في توجهه إلى مصر قبل وصوله إليها
To Muḥammad ibn Abī Bakr on coming to know that he had taken over the position of (Mālik) al-Ashtar as Governor of Egypt after the latter had died on his way to Egypt.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).