Reference for Menachot 181:4

ואידך איצטריך סלקא דעתך אמינא הני מילי במפרש אבל בסתמא לייתי מתרוייהו קמ"ל

but when he did not say so expressly<span class="x" onmousemove="('comment',' But simply said, 'I take upon myself to offer a burnt-offering'.');">⁷</span> [I would say that] he must bring from [each of] the two kinds; we are therefore taught [otherwise].

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