in the ārādhanai (worship) carried out by the herdspeople to indhira, the chief of celestial entities —

killing (that elephant) so that it will fall down crying out —

 the great festival of dhanur yāgam (ritual with bow) —

 to fall down and be destroyed —

 fall (into the tank) —

in the thiruvŏṇam festival [the star of thiruvĕngadaththān is thirovŏṇam] —

 in the festival of sacrifice —

in celebrations —

having grand festivities —