Reference for Bekhorot 10:29

שנתעסקו בדברי שטות

indicating that [the animal] should be a sheep and its firstling must be a sheep; 'Firstling of a goat',<span class="x" onmousemove="('comment',' Ibid. In connection with the words 'ox', 'sheep' and goat', Scripture prefaces in each case the word (firstling) which in each case is superfluous, as it is clearly dealing with the subject of a firstling.');">¹⁶</span>

Jastrow

Jastrow

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