Reference for Gittin 70:3

ניסת מאי טעמא דמיפר לה בעל כי לא ניסת נמי לכי מנסבא מיפר לה בעל אין הבעל מיפר בקודמין

RABBAN GAMALIEL THE ELDER MADE A REGULATION THAT SHE SHOULD TAKE A VOW, etc. R. Huna said: This rule applies only if she is not married again, but if she is married, she cannot take the vow. What is the reason why she cannot take it if she is married? Because her husband may annul it.<span class="x" onmousemove="('comment',' In accordance with the law laid down in Num. XXX, 8. ');">³</span>

Jastrow

Jastrow