Reference for Bava Kamma 158:5

ר' יוחנן אמר כגון בעלי שכם שנאמר (שופטים ט, כה) וישימו לו בעלי שכם מארבים על ראשי ההרים ויגזלו [את] כל אשר יעבר עליהם בדרך

The disciples of R. Johanan b. Zakkai asked him why the Torah was more severe on a thief<span class="x" onmousemove="('comment',' That he has to pay double payment for the theft and four-fold and five-fold payments for the subsequent slaughter or sale of the stolen sheep and ox respectively in accordance with Ex. XXI, 37. ');">⁸</span> than on a robber.<span class="x" onmousemove="('comment',' Who has to pay only the thing misappropriated by him or its value, in accordance with Lev. V, 23. ');">⁹</span>

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