rahoillaan
Rahoillaan is a Finnish grammatical construction that expresses “with his/her/its money.” It serves to indicate that the money used to carry out an action belongs to the subject of the sentence. The form is derived from the noun raha (money) in the instrumental plural raHoilla, combined with the third-person possessive suffix, producing rahoillaan. In practice, it most often appears with verbs of purchase, payment, or financing, as in Hän osti auton rahoillaan, meaning “He bought the car with his money.”
Rahoillaan is a set phrase that combines an instrumental meaning (with money) and a possessive reference (his/her/its).
Rahoillaan may be ambiguous if multiple parties are involved or if the possessive subject is not clear