Succah 3:5-6

Succah 3:5

If the esrog (citron) is stolen or dried up, it is invalid. If it came from an asheirah (a tree worshipped as an idol) or a condemned city, it is invalid. If it came from a tree less than three years old (orlah), it is invalid. If it came from ritually-unclean terumah, it is invalid; of ritually-clean terumah, it ought not be taken but if taken, it is valid. If it came from demai (doubtfully-tithed produce), Beis Shammai say that it is invalid and Beis Hillel say that it is valid. Second tithe in Jerusalem should not be taken but if taken, it is valid.

Succah 3:6

If most of the esrog was scabbed over, or if the pitom (the tip) was removed, if it was peeled, split, or perforated so that even the smallest piece of it was missing, it is invalid. If the minor part was scabbed over, if the stem (on the side opposite the pitom) was missing, or if it was perforated so that none of it was missing, it is valid. A black esrog is invalid; if it is green like a leek, Rabbi Meir says it is valid and Rabbi Yehuda says it is invalid.