Musar for Nedarim 44:11

רבי שמעון ברבי הוה ליה נדרא למישרא אתא לקמייהו דרבנן אמרי ליה נדרת אדעתא דהכי אמר אין אדעתא דהכי אין כמה זימנין

A woman once came before R. Assi. He asked her, 'How did you vow?' She replied, 'By the God of Israel.' Said he to her, 'Had you vowed by mohi, which is a mere substitute,<span class="x" onmousemove="('comment',' V. Mishnah, supra 10a. ');">¹⁰</span> I would absolve you. Now that you did not vow by mohi, but by the God of Israel, I will not absolve you. R. Kahana visited<span class="x" onmousemove="('comment',' Lit., 'happened (to be) at'. ');">¹¹</span> R. Joseph's home. The latter said to him, 'Eat something'; to which he replied, 'No, by the Master of all, I will not taste anything.' R. Joseph answered, 'No, by the Master of all, you may not eat.' Now R. Kahana rightly said, 'No, by the Master of all, etc.' [to strengthen his vow]; but why did R. Joseph repeat this? — This is what he said: 'Since you have said, "No, by the Master of all", you may not eat.'<span class="x" onmousemove="('comment',' I.e., Even if you desire, because one cannot be absolved from such an oath. ');">¹²</span> Raba said in R. Nahman's name: The law is: Regret may be made an opening [for absolution], and absolution is granted for [a vow made in the name of] the God of Israel. Raba was praising R. Sehorah to R. Nahman as a great man. Thereupon N. Nahman said: 'When he comes to you, bring him to me.' Now he [R. Sehorah] had a vow for absolution, so he went before R. Nahman, who asked him: 'Did you vow bearing this<span class="x" onmousemove="('comment',' Some fact mentioned. ');">¹³</span> in mind?' 'Yes,' he replied. 'Or this?' 'Yes.' This being repeated a number of times, R. Nahman became angry and exclaimed, 'Go to your room!'<span class="x" onmousemove="('comment',' I cannot absolve you. ');">¹⁴</span> R. Sehorah departed, and found an opening for himself: Rabbi said: Which is the right course that man should choose for himself? That which he feels to be honourable to himself, and brings him honour from mankind.<span class="x" onmousemove="('comment',' V. Aboth II. 2 (Sonc. ed.) p. 12, n. 2 and 5. ');">¹⁵</span> But now, since R. Nahman has become angry, I did not vow on this understanding. He thus absolved himself. R. Simeon son of Rabbi had a vow for absolution. He went before the Rabbis, who asked him, 'Did you vow bearing this in mind?' He replied, 'Yes.' 'Or this?' 'Yes.' [This was repeated] several times,

Shemirat HaLashon