מעשר שני ג׳:ב׳ - ג׳:ג׳

מפני שהוא ממעט באכילתו – for heave-offering is forbidden to one who has bathed but must wait until sunset to be perfectly clean and to foreigners (i.e., non-Kohanim).

ורבי שמעון מתיר – who holds that it is permitted to bring holy things to the house of defilement/blemish.

מה אם היקל בזבחי שלמים – that one purchases peace offerings with the monies of Second Tithe, and even though he lessens his eating [of them] for they are able to become rejected in consequence of an improper intention on the part of the officiating priest and the remnant [which are portions of sacrifices left over beyond the legal time and bound to be burnt] which become impure, shall we not be lenient concerning the heave-offering to purchase it with the monies of Second Tithe which do not have the laws of improper intentions on the part of the officiating priest and the remnants of sacrificial portions left over beyond the legal time nor the law of impurity, for not all the things that make that which is holy impure make the heave-offering impure. And the Halakha is not according to Rabbi Shimon.

מי שהיה לו מעות – of Second Tithe, and he must with them unconsecrated things that are not for eating, drinking or anointing.

ולחבירו פירות – of unconsecrated produce and he wants to do a favor for him, that he should redeem the monies of Second Tithe for his produce.

אוכל פירותיו בטהרה – for the sanctity of [Second] Tithe takes effect on the produce and he must eat them in purity.

ולא יאמר כן לעם הארץ – who is suspected of eating produce of [Second] Tithe in defilement.

אלא בדמאי – such as if those monies of Second Tithe were of דמאי/suspicion as to the tithes therefrom being taken properly, or whether it is permissible to say this even to an עם הארץ/ignoramus/illiterate, lest the monies were not [Second] Tithe.