The 200th prohibition is that we are forbidden to have chometz seen in our dwellings all seven1 days [of Pesach].
The source of this commandment is G‑d's statement,2 "None of your chometz may be seen, and none of your s'or3 may be seen in all your territories."
These [chometz and s'or] are not two separate prohibitions with separate content, but rather one and the same idea. The Sages said this explicitly:4 "The verse begins with chometz and ends with s'or. This teaches you that chometz and s'or are the same." The intention of this statement: there is no difference between the s'or itself and that which it made into chometz. [I.e., both are included in this one prohibition].
One who transgressed and left chometz in his possession is not punished by lashes,5 unless he bought chometz on Pesach and officially took possession of it. Then, he would have performed an action [and therefore receives lashes]. In the words of the Tosefta,6 "One who retains chometz on Pesach or who leaves kilayim7 [growing in] his vineyard does not receive lashes."
