Reference for Sanhedrin 153:6
תסתיים דרבא הוא דאמר פטור דאמר רבא כפתו ומת ברעב פטור
Raba said: If one <font>bound his neighbour and he died of starvation, he is not liable to execution</font>. Raba also said: If he <font>bound him in the sun</font>, and he died, or in a place of <font>intense cold</font> and he died, he is liable; <font>but if the sun was yet to appear, or the cold to make itself felt, he is not</font>.<span class="x" onmousemove="('comment',' I.e., he is liable only if the place was already exposed to heat or cold. But if it was merely destined to become hot, the sun not yet having risen, he is not liable. In the first case, he is regarded as a direct murderer, in the second, as an indirect cause. That is the general reason for the exemptions taught in this passage. ');"><sup>4</sup></span>