Someone (mag-, mang-) observes a holiday, holy day, or post-burial by keeping the social and religious abstinences, obligations, or rituals (-en) on account of someone (-an).
no longer practiced
ngílin
pangilin
Magngīlin ka anchan pista.
Observe (the obligations) when it is the fiesta.
Ngilīnen mo koman so karni, ta Simāna.
Observe (the abstinence for) eating meat, because it is Easter.
Ngilīnan mo si āmang a nadiman.
Observe (the rituals) on account of father who died.