Translation:Shulchan Aruch/Orach Chaim/295

1. The Havdalah Recited by the Sheliach Tzibbur.RAMA: And we say ויהי נועם and afterwards it is customary to recite the Order of Kedushah in order that the Jewish people will delay the completion of their prayers, in order to delay the return of the wicked to Gehinnom [after their Shabbos respite] (Tur). At a time when we do not say ויהי נועם, like when a Yom Tov falls during the week, we do not say the order of Kedushah, but we do say ויתן לך (Kol Bo). The prayer leader says Havdalah in order that those who do not have wine may fulfill their obligation.RAMA: And it is our custom to say and to remember Elijah the Prophet on Motzei Shabbos, to pray that he will come and announce the redemption. (Tur)