He was born as the Amsam of Kumudan, one of the Nityasuris in Paramapadam. He was born in the Manakkaal Agraharam adjacent to ANBIL, in Lalgudi Taluk, Trichy District. His date of birth is also variously placed by scholars: PPM: 832 AD; MSR: 870AD; MKS: 876 AD. But, all are agreed that he was born in the year Virodhi, month of Masi in the constellation of Magham.
The credit for transforming Yamunai thuraivan into Yamuna Muni goes to him (PPM). For 12 years, he rendered personal service to his Acharya, Uyyak Kondaar and after the demise of Uyyak Kondaar’s wife, he took over the culinary duties and cooked food for his Acharya. (PPM)
Embar describes that Nammalwar drank of the ocean of mercy of the Lord Narayana and rained it through Natha muni and that Pundarikaksha was like the fountain spring that let the stream reach Alavandar. Pundarikaksha learned the holy collects and Yoga Rahasya from Natha Muni and passed them on to Alavandar. His devotion to his Guru was such that on an occasion when two daughters of Pundarikaksha had to cross the slush on their way back home after bath in the river, he laid himself down on the slush and asked them to walk over on his back. Since, the sands at the feet of the Guru’s daughters were on his body, he came to be known as ‘ Manal Kaal Nambi’ . He took to Sannyas. He does not seem to have written any work. But, citations of his teachings are found in the works of other Acharyas. Swami Desikan quotes his teachings in Nyaaya Parisuddhi. So, he is known as “Yathaartha Khyaadhi” Swami Desika in Sloka 7 of his Yatiraja Saptadhi praises Manakkaal Nambi as follows:
ANUJJITHA KSHAMAA YOGAM : Parasurama had no patience. Out of jealousy, he fought with ‘Chakravarthi Tirumagan’. With an uncontrollable rage, he embarked on destroying the entire Kshatriya race. But, Manakkaal Nambi never lost his composure and kept his senses under absolute control.
APUNYA JANA BHAADAKAM: Dasaratha Rama destroyed the Rakshasas, otherwise known as ‘Punya Jana’. But, Manakkaal Nambi never harmed anyone but always did all the good he could to Sadhus who are also known as ‘Punya Jana’
ASPRUSHTA MADHA RAAGAM: Balarama became reddish in color by excessive drinking Manakkaal Nambi never exhibited any pride or prejudice or any excessive attachment to anything worldly. Let us prostrate before this blemish less 4th Rama