Muhammad b. Muhammad b. Al-ash'ath reliability

Assalamu alaikum wa rahmatullah,

What is the opinion of the Imams on this narrator ? Is he reliable ? Are his narrations from sayyid Musa ibn Isma'il ibn Musa ibn Ja'far al-sadiq considered authentic ? I saw some of his narrations in Taysir al matalib of Imam Abu Talib Yahya (as) who narrated from Ibn 'Adi 'an Ibn Al-ash'ath, but Ibn 'Adi weakened Ibn Al-ash'ath.

May Allah bless you.