Secret behind the change of heart

There is a prominent religious dignitary well known for both his erudition and aggressive nature. He played a lead role towards ushering in yahapalanaya.

However, since of late this dignitary has become a virulent critic of a very high authority in yahapalanaya. He had even vowed in public to wage a big battle against the high authority single-handed if need be. 

Amazed and disconcerted that the dignitary who had been so pally with him had suddenly turned so hostile towards him, the high authority had deployed sleuths to unearth the cause for the sudden change of heart on the part of his onetime close pal.

The high authority has now received an intelligence report highlighting the cause for the attitudinal change of the religious dignitary.

According the report, the sleuths have gathered incontrovertible evidence to say that a certain group hostile to the high authority had won the heart of the erudite dignitary by offering him a precious gift.