Reference for Kiddushin 7:5

וממאי דדרשינן הכי דתניא (ויקרא כב, יג) וזרע אין לה

And how do you know that such exegesis is permissible?<span class="x" onmousemove="('comment',' I.e., that the yod () may be regarded as superfluous?');">⁷</span> - Because it was taught: [If a priest's daughter also be married unto a stranger, she may not eat of an offering of the holy things.

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