Preface This is very big, long & detailed discussion on very important topics held last year in 2021 & later on Resp. Professor S. N. Ojhaji left the world. I, all students of Prof. Ojha, Ayurveda practitioners/learners worldwide  & all members of 'Kaysampraday' group;  all are very sad and missing him badly. As usual he contributed greatly in this discussion also as he used to do. All are advised to read this discussion patiently and carefully, very well contributed by Prof. Ojha & other Gurus. This discussion inspired me to compile posts on D.D. of Aamvat/Vatashonita, Gatavat/Aavritta-vat & Anyoanyavritta-vat/Dosha-bhedavritta-vat; available on blog now.   We are publishing this discussion heavy heartedly in the absence of great kaya chikitsa scholar Prof. Ojha Sir who had an equal command on Ayurveda as well as modern science. On the behalf of Gujarat Ayurved University, Jamnagar, Gujarat, India, I, as a blog admin pay my sincere gratitude...