Question:
Should the word “vakanina” (וקנינא) in a ketubah be written or completed at the time of the kinyan, or may it be pre-written beforehand?
Answer:
There are differing customs regarding how the word “vakanina” is handled in a ketubah.
Some are careful not to have the word fully written beforehand. Instead, they either leave part of the word incomplete (commonly the Kuf) or write the entire word only after the kinyan with Chasan has been performed before the witnesses, before the witnesses sign. This approach ensures that the ketubah accurately reflects that the kinyan has now taken place and avoids the concern of recording an act before it occurs.
Others, however, follow the practice of having the ketubah fully printed or pre-written in advance, including the word “vakanina,” without making any additions at the time of the ceremony.
Each custom has advantages and disadvantages. Completing the word at the time of the kinyan avoids any issue of appearing to write something untrue, prior to it taking place. On the other hand, leaving it incomplete can lead to practical issues, as it is sometimes forgotten, raising concerns about the completeness or validity of the ketubah.
For this reason, some prefer to have the entire text written in advance to prevent errors, relying on accepted practice that this does not invalidate the document.
Accordingly, there is no single universally accepted custom, and one should follow their community practice or the direction of the officiating rabbi.
Sources:
Shach C.M. 39:38; 46:59 [may write tofes before Kinyan]; Shulchan Haezer 6:7 [fill out Vekanina after Kinyan]; Tashbeitz 3:301; Minchas Pitim E.H. 66:1; Az Nidbaru 9:56 [no makor to do so]; Shevet Halevi 8:286 [is a chumra and Hiddur]; Seder Kiddushin Venissuin 3:25; Kesuba Kehilchasa 3:10 and in Shevivei Eish 3-4 p. 178; Nitei Gavriel 30:11; Mishpat Hakesuba 46:25; 47:32 [not to do so]; Vol. 5 p. 82