Reference for Shevuot 7:9

אי הכי ידיעות התראות מיבעי ליה הא לא קשיא תני ידיעות דהתראות

the phrase THE DISCOVERY OF HAVING SINNED THROUGH UNCLEANNESS [implying unconscious sinning] is inappropriate; the appropriate expression would be 'warnings against sinning through uncleanness'? - This question need cause no difficulty: the Tanna means 'the laws concerning the knowledge of the warnings against sinning'. If so, how can there be TWO, SUBDIVIDED INTO FOUR?

Jastrow