daf bit: Pesachim 105

[cellio]

Rabina asked R. Nachman b. Yitzchak: if someone did not recite kiddush at the beginning of Shabbat as required, may he proceed to recite it at any time during the day? R. Nachman answered that since one who did not recite havdalah at the end of Shabbat may do later in the week, then so too he can recite kiddush later. Then a question is raised: on Shabbat we make kiddush over wine and also drink wine with all the festive meals (Friday night and Saturday), so if a man has only enough wine for one glass, what takes precedence? The conclusion here is that the Friday-night kiddush takes precedence because it sanctifies the entire day, and a religious duty is more precious when performed at the proper time. (105a-b)

Addendum: only after posting this did I see this relevant question from Mi Yodeya via the Twitter feed.