Awareness of tumah is of two [types] which are [in reality] four: [If] one became tamei and was aware of it, and [afterwards] the tumah escaped his awareness, but he remembered the holy thing; [or awareness of] the holy thing escaped him, but he remembered the tumah; [or] both escaped his [awareness], and he ate holy things being unaware, and he became aware after he ate —- he is [required to bring] a variable [sin-] offering. [If] one became tamei and was aware of it, and [afterwards] the tumah escaped his awareness, but he remembered the Temple; [or awareness of] the Temple escaped him, but he remembered the tumah; [or] both of them escaped his [awareness], and he entered the Temple being unaware, and he became aware after he came out —- he is [required to bring] a variable [sin-]offering.