According to Jain tradition, Bhagwan Mahavir performed many fasts (upavas) and their parnas (breaking of fast) at different places. For his 4th maskhaman (a fast for one month), the parna (breaking of fast) was done at a place starting with the letter "બ" (Ba) in Gujarati.

The place is Bhandak (ભંડક) according to Jain scriptures.

So, Bhagwan Mahavir's 4th maskhaman parna place starting from "બ" is Bhandak (ભંડક).