Tobit 8:20

20 For before the days of the marriage were finished, Raguel had said unto him by an oath, that he should not depart till the fourteen days of the marriage were expired;

Tobit 8:20 In-Context

18 Then Raguel bade his servants to fill the grave.
19 And he kept the wedding feast fourteen days.
20 For before the days of the marriage were finished, Raguel had said unto him by an oath, that he should not depart till the fourteen days of the marriage were expired;
21 And then he should take the half of his goods, and go in safety to his father; and should have the rest when I and my wife be dead.

The Brenton translation of the Septuagint is in the public domain.