Reference for Bava Metzia 44:4
בעינן כי יותן דומיא דכי יתן מה יתן לדעת אף כי יותן נמי לדעת
— how is it to be explained? 'Being put must be like 'putting': As 'putting' can only be done with the knowledge [of him who puts] so 'being put' must happen with the' knowledge [of the person concerned].<span class="x" onmousemove="('comment',' And if the knowledge that dew descended upon the produce comes after the event, the produce is rendered capable of becoming ritually unclean if the owner is pleased with the event, provided the produce is still moist. ');"><sup>7</sup></span> Come and hear: R. Johanan said in the name of R. Ishmael<span class="x" onmousemove="('comment',' Other versions have Simeon instead of Ishmael. Cf. infra 27a, where the version is 'Simeon b. Yohai'. ');"><sup>8</sup></span>