In northern Europe in the summer shabbos ends very late, close to midnight. So if the family goes to sleep before the end of shabbos how does one make havdalah on Sunday morning? One omits the candle and spices. Does one say the Henei kel yeshuasi… paragraph?
Interesting question. The reason why we have the minhag to say these pesukim is as a good siman to start off the week. Therefore we would not say the pesukim on Sunday morning since it is no longer the beginning of the week.
Piskei Teshuvos (296-6) in the name of Likutei Maharich