In other words, in the first scenario, the Kaf HaChayyim maintains that the kiddushin was not valid. Even if other authorities disagree with him, we nevertheless see quite clearly that in matters of Sabbath observance, one has to take great care not to commit any transgression because it might affect others as well.
Please keep in mind that while your son is to be commended for being careful, we shall see that this matter is far from clear-cut. We will discuss this issue more next week.
(To be continued)
Rabbi Yaakov Klass, rav of Congregation K’hal Bnei Matisyahu in Flatbush, Brooklyn, is Torah Editor of The Jewish Press. He can be contacted at firstname.lastname@example.org