“ The school of Shammai says, "Flame, and grace after meals, and spices, and havdalah." The school of Hillel says, "Flame, and spices, and Grace after meals, and havdalah." The school of Shammai says, "Who created the light of fire." The school of Hillel says, "Who creates the lights of fire." Mishnah 6
We do not bless: Neither over the flame nor over the spices of idolaters. Neither over the flame nor over the spices of the dead. Neither over the flame nor over the spices in front of an idol. We do not bless over the flame until its light is usable. ”