Reference for Bava Kamma 110:12

אש דכתיב (שמות כב, ה) שלם ישלם המבעיר את הבערה עד דעביד כעין מבעיר

[that is to say] only where he acted [culpably], as by actually kindling the fire.<span class="x" onmousemove="('comment',' But not where any precaution has been taken. ');">²⁰</span> Tooth, as it is written, And he shall send forth,<span class="x" onmousemove="('comment',' Ex. XXII, 4. ');">²¹</span>

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