Q. If one heard Kiddush, Hamotzi, or Havdalah; and the cup of Kiddush wine, piece of Challah, or Besomim, respectively, are passed around; is it a violation of “Ein maavirin al hamitzvoth” to pass the item on to the next person and therefore, one should partake himself first?

A. Horav Shlomo Miller’s Shlit’a opinion is that there is no “ein maavirin” on the actions you mention, as they are not a “cheftzoh” or the essence of a mitzvah but rather at best they constitute complying with a necessary act or mainly a birchas hanehenin (a brocho for the pleasure enjoyed.) Indeed, when eating matza on the seder night it would apply.

Besides, honoring someone else as giving him the respect of receiving first may also be a mitzvah.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a