Answer

Śvetāmbara Paryushan parampara me teesre din Kalpasutra ki vishesh pooja ya procession hoti hai, aur Kalpasutra me mukhyatah Bhagwan Mahavir Swami ke jeevan ka varnan aata hai. Kuch paramparāon me day-wise vidhi thodi alag ho sakti hai. ( jainqq.org)

Explanation

Isliye seedha jawab yeh hai: teesre din Bhagwan Mahavir Swami se sambandhit varnan ya Kalpasutra ka vachan mana jata hai. Kalpasutra me Mahavir Swami ke jeevan ki katha aur anya Tirthankaron ka varnan bhi hota hai. ( jainqq.org)

Spiritual Understanding

Is vachan ka uddeshya Bhagwan Mahavir ke tyag, vairagya aur dharm-marg ko yaad karna hai, taaki hum apne acharan ko shuddh aur ahimsa-may bana saken. ( jainknowledge.com)

Takeaway

3rd day par Bhagwan Mahavir Swami ka varnan / Kalpasutra vachan hota hai.