Reference for Keritot 37:7

מקצת ידיעה כידיעה דמיא ור"ש סבר

The Master said: 'If he passed through one and entered [the Temple precincts], and was sprinkled upon once and also a second time, and immersed himself; and then he passed through the other and entered [the Temple precincts], he is liable'.

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