Hilchot Pesach, Halachot of Pesach, Shulchan Aruch Siman 447 Saifim 1-5, Smoking Hookah on Pesach: Does the Tobacco need to be Kosher for Passover? , Smoking generally -- is it muttar or assur? Igrot Moshe (Choshen Mishpat Chelek 2 Siman 76), Tzitz Eliezer (Chelek 15 Siman 39 Ot 9), Rice on Pesach - Enriched Rice
