Binding the Arba Minim (Four Species) on Yom Tov

Hi,

We tie the Arba Minim (Lulav, Etrog, Hadas, Aravah) before Succot, since the ideal is to use them when they are bound together. We generally use rings made of lulav-leaves.

Should the rings come undone on Yom Tov, one may not re-tie them with a knot; better to wrap the un-done ring around the Arba Minim and simply tuck in the end.

(Shulchan Aruch Orach Chaim 651:1; Mishneh Berurah 651:11)

Gmar tov,
Mordechai