Reference for Keritot 37:14

רבי ישמעאל היא דלא בעי ידיעה בתחלה

[indicating that] even [if there is some] uncertainty in connection with his knowledge, Scripture still renders him liable; but regarding the other laws of the Torah,it is written: If his sin be known to him;<span class="x" onmousemove="('comment',' Ibid. IV, 28. okgbu');">⁶</span>

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