Reply To: Aura of Shabbos

Rav Moshe Sternbach, Shlita (Teshuvos V’Hanhagos, Orach Chayim 3:83) poskens that there are

two kinds of Tosefes Shabbos-one for Kabolas Issur Melacha which one

can be mekabel and still daven the weekday Mincha as long as he stops

doing melacha-and the regular Kabolas Kedushas Shabbos after which one

can no longer daven the weekday Mincha. Accordingly, if one has not yet

davened Mincha but can refrain from doing melacha, he should at least

be mekabel on himself “Tosefes Shabbos L’inyan Issur Melacha.”

In other words – and I think that this addresses Wolf’s question – There is a difference between being mekabel tosefes shabbos l’inyan issur melacha (after which one can still daven Mincha, according to SOME poskim), versus the full 100% acceptance of kedushas shabbos (which would preclude davening Mincha later).