Chullin 67 - July 6, 21 Tamuz

The Gemara details the hermeneutical methods used to permit drinking water from pits, ditches, or caves without concern for finless and scaleless creatures. Regarding water in vessels, the braita states that its exemption is explicit in one verse and implicit in another. One version holds that the permission for vessels is explicit, derived from the verse explaining that fish in seas and streams must have fins and scales to be eaten (Vayikra 11:9), meaning that anything in vessels is permitted. The second version reverses this, arguing that the explicit source is the subsequent verse (Vayikra 11:10-11) which forbids fish in seas and streams that lack fins and scales. The discussion then shifts to spontaneous generation. While creatures that crawl upon the ground are biblically forbidden, creatures that spontaneously generate within vessels or food are excluded from this prohibition, provided they have not yet crawled upon the ground. The Gemara delineates the exact parameters of this exclusion.