Soncino English Talmud
Nedarim
Daf 90a
Shall we say that the following supports him? [If he vows,] 'Konam that I benefit not from So-and-so, and from anyone from whom I may obtain absolution for him,' he must obtain absolution in respect of the first, and then obtain absolution in respect of the second. But if you say, absolution may be granted even before the vow takes effect, surely he can be absolved in whatever order he pleases! — And who knows whether this one is first and that the other is the second? Shall we say that this supports him: [If he vows,] 'Konam that I benefit not from So-and-so, and behold! I will be a nazirite if I be absolved therefrom'; he must be absolved of his vow, and then of his naziriteship. But if you say, absolution may be granted before the vow takes effect, if he wishes, let him first be absolved of his vow; and if he wishes, let him first be absolved of being a nazirite? — This agrees with R. Nathan. Rabina said: Meremar told me: Thus did your father say in R. Papi's name: The controversy is only in reference to annulment, but in respect to absolution all agree that he [the Sage] may grant it even before the vow is operative, because it is written, 'He shall not break his word,'
Sefaria