Parashas Vayikra · Aliyah 7 · Passuk 2
Chabad.org — English translation + Rashi
Torah Temima points to Shevuot 2a–14a / Toras Kohanim on tumah of the sanctuary.
E-Daf / Tsurras Hadaf
PDF of the daf / source
English: Or a person who touches any impure thing… and it is hidden from him, and he is impure and becomes guilty.
Tum’at Mikdash ve-kodashav be-shogeg — classic trigger for oleh ve-yored.
One who contracts impurity (from a carcass of a pure or impure animal, or a sheretz) and then, forgetting the impurity, enters the Mikdash or eats kodashim, becomes liable for the sliding-scale chatat of this section.