For the source text click/tap here: Menachot 73
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Our daf states that if a Nochri brings a Korban Shelamim as a Nedavah, and he vows, "I am bringing it so that a Yisrael who made a Neder to bring a Shelamim will fulfill his obligation with this Korban," it is brought as a Shelamim and eaten by the Yisrael.
If however a Nochri sends a Korban Olah to Yerushalayim from overseas together with wine for the Nesachim, the wine that he sends is offered as Nesachim. If he sends no Nesachim, then money from the public funds is used to buy Nesachim for his Korban.
We explore the next statement that Peace offerings volunteered by gentiles are sacrificed as burnt offerings, which are burned completely upon the altar.
With regard to the source for this halakha, if you wish, cite a verse; and if you wish, propose a logical argument. If you wish, propose a logical argument: Concerning a gentile who volunteers an offering, the intent of his heart is that the offering should be entirely sacred to Heaven, and he does not intend for any of it to be eaten.
When do we rely on verse citations versus logic and what weight do we give to the “heart” or intentionality?