Reference for Yevamot 108:22

אמר רבא אתיא דודו דודו כתיב הכא (ויקרא כ, כ) ערות דודו גלה וכתיב התם (ויקרא כה, מט) או דודו או בן דודו יגאלנו מה להלן מן האב ולא מן האם אף כאן מן האב ולא מן האם

What need was there to write it<span class="x" onmousemove="('comment',' The repetition. ');">⁵²</span> in respect of a father's sister and also in respect of a mother's sister?<span class="x" onmousemove="('comment',' Even if one only had been repeated, the other could have been inferred from it. ');">⁵³</span> — R. Abbahu replied: Both are required. For had the All Merciful written it<span class="x" onmousemove="('comment',' The repetition. ');">⁵²</span>

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