Responsa for Chullin 94:5
בחזותא ואיכא דאמרי
Raba said: If [the lung was] blue it is permitted, if black like ink it is trefah; for R'Hanina said: Black [blood] is [in reality] red blood which has turned black by disease.<span class="x" onmousemove="('comment',' V. Nid. 19a. Hence black is a symptom of decay and disease. veurh');"><sup>2</sup></span>
Explore responsa for Chullin 94:5. In-depth commentary and analysis from classical Jewish sources.