And the 103rd prohibition is that we are forbidden from offering a sin-offering made from grain (minchas choteh) together with frankincense.

The source of this prohibition is G‑d's statement1 (exalted be He), "He shall not place any frankincense upon it."

One who does place frankincense in such an offering2 is punished by lashes.

In the words of the Mishneh,3 "One is punished separately for oil and frankincense," since they undoubtedly count as separate prohibitions.

The details of this mitzvah — i.e. of a minchas choteh — are explained in the 5th chapter of tractate Menachos.4