Life Is A Circle Of... ~Buddha

What is the first sermon of Buddha called as ?

………………… is An Epic Poem In The Sanskrit Mahakavya Style On The Life And Nirvana Of Gautama Buddha By Asvaghosa.

Consider the following places : 1. Lumbini 2. Both Gaya 3. Sarnath 4. Kushinagar In the context of the life of Buddha, the correct chronological sequence of these places is