swallowed —

bestowed his mercy (of accepting the flower from its trunk before it loses its freshness and decorating himself with it) —

helping them in all ways —

showed mercy (by eliminating the sorrow inflicted by a crocodile) —

showered infinite grace —

one who ruined them —

 one who burnt thripuram (the three towns) —

have ī committed? —

 one who showed desire —

previously committed —

 not knowing to enter —

due to burning into ashes —

 mercifully spoke —

 in the form of a garland of words —

 mercifully spoke to have garlands of words —

 turned to dust —

 one who turned [it] to dust —

the remnants of bhagavath prasādham (food that had been served to emperumān) eaten (by them) —

the way they got —

mercifully carried out —