Yahya bin Ma’een -Rahimullaah Abu Zakariya, Yahya bin Ma’een bin ‘Awn al-Ghatfaanee.
It is said that Yahya’s father left Yahya a million dirham in inhaeritance, and Yahya spent all of it in the field of Hadeeth until he did not have shoes to wear.
He was the elder of his peers, from the likes of ‘Alee bin Madeenee, Ahmad bin Hanbal, Ishaaq bin Rah’wayaa & Abu Bakr bin Abee Shayba -Rahimhumullaah.
A man came to Imaam Ahmad & said : O Aba Abdillaah, look at these ahaadeeth indeed there is a mistake in them. So Imaam Ahmad said: Go to Abu Zakariya , for indeed he knows the mistake.
Imaam Ahmad said about Yahya bin Ma’een: Here is a man that Allaah created for this matter, he exposes the lies of the liars. He died in the year 233 A.H.
Source: Brief Biographies of some of the People of Knowledge – Taken from Siyaar ‘Alaam an-Nubalaa & Thahdheeb at Thahdheeb And other works – Compiled & Translated By Abbas Abu Yahya