MARANERI NAMBI.

 This Acharya is the one who impressed Yamunacharya the most. 

Yamunacharya was wonderstruck when he saw acharya working in the field drink mud water instead of pure water. When questioned why he was doing such a thing. He was told that as the body goes into the earth ultimately he did not find it strange to feed it mud water. This yamunacharya equated to Satakopa who had eradicated with anger the Sata vayu before it entered his body.

{The Sanskrit root word here is “Shata” - शठ. In Vaishnavite tradition, one of Nammaazhvar’s titular names is Shata-kopan. Legend is that after He was born, He drove away Shata-vayu in anger.  Since He spurned off Shata in anger, thus the title Shata-Kopa.

As for “chadaari”, the word is actually “Shataari”, which would split as “Shata + Ari” in Sanskrit. The meaning being “enemy (Ari) of Shata”. The Shataaris are always placed under the feet of the presiding deity in sanctum sanctorums of the Vishnu temples, and are made with mini Padukas on top of crown like structures. The belief is that by placing this thing - Shataari - which is always at the feet of the Lord, upon devotee’s head, the devotee is graced with the ability to fight off Shata.}

 He thus called him Maran Err Nambi. He invited him to join his group. M Nambi refused saying he  belong to panchama caste. Yamunacharya told him there was no caste bar for a Brahmajnani. He joined and served his acarya with great reverence. 

Yamunacharya once had fixed a date of performing punyavachanam of the new hall being expanded for his kalakshepam. On the penultimate dayM N visited the hall with another disciple and was well impressed. 

When Yamunacharya learnt this he canceled the performance of the punyavachanam and directly started the kalakshepam lecture. The reason being the hall was already sanctified by the foot prints of M Nambi who he equated to Nammalwar . So great a regard he had for M N.