Reference for Bava Kamma 52:9

ואמר רבה זרק כלי מראש הגג ובא אחר ושברו במקל פטור מאי טעמא מנא תבירא תבר

cubits but it fell eight cubits away, — if it caused damage there will be liability for Depreciation; regarding the [additional] Four Items there is still exemption;<span class="x" onmousemove="('comment',' On account of the absence of a will to do damage. ');">¹⁶</span> concerning Sabbath, if there was express intention that the stone should fall anywhere, there is liability for an offence,<span class="x" onmousemove="('comment',' For the minimum of distance to constitute the violation of Sabbath by throwing an object in a public thoroughfare is four cubits; v. Shab. 96b. ');">²¹</span> but in the absence of such express intention no offence was committed;<span class="x" onmousemove="('comment',' V. p. 137, n. 7. ');">²⁶</span> in the case of manslaughter,<span class="x" onmousemove="('comment',' V. p. 138 n. 3. ');">²⁷</span>

Jastrow

Jastrow