Answer

Trishala Nandan Bhagwan Mahavir Swami ne pehla Masakshaman diksha ke baad kiya tha.

Jain parampara ke anusaar, Bhagwan Mahavir ne diksha lene ke baad kathor tapasya aur sanyam ka aarambh kiya. Unhone apne sadhu jeevan mein anek baar upvas aur tapasya ki, jinmein Masakshaman bhi shamil tha.

Explanation

Trishala Nandan ka arth hai Mata Trishala ke putra, yani Bhagwan Mahavir Swami.

Masakshaman ka arth hota hai ek mahine tak nirantar upvas/tap karna, Jain tapasya ki ek bahut mahatvapurn sadhana.

Takeaway

Bhagwan Mahavir Swami ka jeevan humein sikhata hai ki atma-shuddhi ke liye tapasya, sanyam aur samata bahut mahatvapurn hain.