Reference for Niddah 140:33

מאי קמ"ל

and a little in business. Did not many, they said, do so and it was of no avail to them? — Rather, let them pray for mercy from Him to whom is the wisdom, for it is said, For the Lord giveth wisdom, out of His mouth cometh knowledge and discernment.<span class="x" onmousemove="('comment',' Prov. II, 6. ');">²⁸</span>

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