First of all I’d like to present to you chains for our major ahadeth books from Shah Waliullah Dihlawi

I also remember that in some book, I seen chain from Muhammad al-Uthaymeen  till the prophet (sallalahu alaihi wa ala alihi wa sallam).

1-st Question– Does shias have such chains for their books in our time? Or in close past?

Second question is about high chains. For examples in Musnad of Imam Ahmad  , there are a lot of ahadeth, where between Imam and prophet (sallalahu alaihi wa ala alihi wa sallam) are only 3 persons. There is complete book “ath-Thulathiyat” which compilation of such ahadeth from Musnad.

What is the most high chain in shia ahadeth book, which is presently available for us? Chain should be till prophet (sallalahu alaihi wa ala alihi wa sallam).

Third question. I can list here about 50 names of books regarding weak and fabricated ahadeth from our scholars. Starting from mutekadimin, and ending with our time. Indeed our scholars did titanic work to distinguish between sound and fabricated ahadeth. They have filtered almost all books of ahadeth, and presented to us saheeh sunnah.

What about shias? I know one  work regarding this, by Sayed Hashim Maroof al-Husayni.
What is the eldest book of shias on fabricated and weak ahadeth?

Question 4.

Our scholars authored books in almost all possible sciences of ahadeth,

For example, book of Hatib – al-Muttafiq wal Muftariq, about narrators with similar names.

A lot of books on tadlis and mudalisin authored by our scholars, like Suyuti, ibn Hajar, Ajmi and etc.

Books about confused narrators – Mukhtalitin.

And etc.

Is there such books in shia world?