Reference for Yevamot 63:2

ויאמרו אי דמייבם והדר חליץ הכי נמי

the All Merciful having said, 'Since he had not built<span class="x" onmousemove="('comment',' I.e., refused to marry his brother's widow, but participated in her halizah. ');">⁵</span> he must never again build'.<span class="x" onmousemove="('comment',' Must never marry the other widow. The imperfect [H] may be rendered as a past, present or future. ');">⁶</span> Raba said: If he<span class="x" onmousemove="('comment',' The second brother who had addressed a ma'amar to the first brother's widow. V. our Mishnah. ');">⁷</span>

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