The sixth aliyah gives the sin offering of common people. Also given here is the offering of a person who is in a position to give evidence in court but doesn't.
The offering given by a person that becomes tamai (ritually impure), whether by touching a dead unkosher animal, or a creeping animal which is dead, and then goes and eats something sanctified or goes into a sanctified area of the temple, is here. Our sages teach that it is possible to transgress in this manner even today, G-d forbid, by going onto the Temple Mount in Jerusalem. This is so, because everyone is currently tamai mais, and the Temple Mount remains sanctified. This situation will be rectified when Moshiach comes, may it be speedily in our days, Amen.