Halakhah for Shevuot 98:13
ואי איתמר בהא בהא קאמר שמואל אבל בהך אימא מודה ליה לרב צריכא
but are liable in respect of the oath of utterance;<span class="x" onmousemove="('comment',' For though they did not desire to evade a money payment (and are therefore exempt from a guilt-offering) , they nevertheless uttered a false oath, and must bring a sliding scale sacrifice. This sacrifice is brought, however, only if the transgressor trespassed unwittingly in that he was unaware that a sacrifice was necessary for a false oath, though he knew a false oath was prohibited, and that he was swearing falsely; for if he swore falsely unwittingly (i.e., if he really thought he was swearing the truth) , he would in any case be exempt from a guilt-offering for his false oath of deposit; v. supra 36b.');"><sup>14</sup></span> and Samuel said: They are exempt also in respect of the oath of utterance.