For it (actor & inst) to make an īdaw bird, the bile of a chicken, pig (patient -on) be a bad omen.
A substantive with actor role occurs only in the sentence unidentified as a third person pronoun -na.
Linawānay akbun din bongbong Immamata''on ay Kulāuh at agguyda intūluy an nun'ihāwa.
It made the biles of the engagement bride-wealth payment (i.e., chickens) of Immamata''on to Kulāuh a bad omen and so they didn't continue their marriage.