Arakhin 20A

בחד זימנא אמדינן ליה, או דלמא כיון דבזה אחר זה נדר, תרי זימני אמדינן ליה?

we assess him once and he donates twice the value of that single assessment, or perhaps since he vowed sequentially we assess him twice?

ואם תמצא לומר: כיון דבזה אחר זה נדר תרי זימני אמדינן ליה, אמר: ״שני דמי עלי״ בבת אחת, מהו? הכא ודאי בבת אחת נדר, בבת אחת אמדינן ליה, או דלמא כיון דקאמר ״שני״, כזה אחר זה דמי?

And if you say in that case that since he vowed sequentially we assess him twice, if he says at the same time: My assessment is twice incumbent upon me, what is the halakha? Do we say that here certainly he vowed at the same time, and therefore we assess him once, or perhaps since he says the word: Twice, it is considered as though he vowed sequentially and therefore he must be assessed twice?

אם תימצי לומר: כיון דקאמר ״שני״ כזה אחר זה דמי, אמדוהו מאליו מהו? מי אמרינן: הא אמיד מאליו וקאי, או דלמא בעינן כוונה לאומדנא?

Finally, if you say that since he says the word: Twice, it is considered as though he vowed sequentially and he must be assessed twice, if a court of 10 assessed him on its own,i.e., not for the purpose of assessing a vow, what is the halakha? Do we say that he has already been assessed on his own and now stands before us, and therefore there is no need for another assessment, or perhaps we require an assessment to be performed with intent for the sake of consecration to the Temple treasury.

פשוט מיהא חדא, דתנן: ״דמי עלי״ ומת ⁠— לא יתנו יורשין, שאין דמים למתים.

The Talmud suggests: Resolve at least one of these dilemmas, as we learned in the Mishnah below: In the case of one who says: It is incumbent upon me to donate my assessment, and then dies, his heirs need not give his assessment to the Temple treasury, as there is no monetary value for the dead, and his assessment at the time of his vow is unknown.