Shabbos 75b - Shochet

The gemara quotes Rav says that one who slaughters an animal is חייב for צובע - coloring the flesh around the incision [see previous post].

Rav explains that if later generations come to ridicule me and say "What pleases the Shochet about the dyed flesh?" I therefore explain that it is pleasing to him so that people will see the throat soaked with blood and come to buy from him [seeing that the meat is freshly slaughtered].

So what does a lamdan do? He thinks about what the gemara DIDN'T say and asks what the halacha might be in such an instance.

F'rinstence, what about Kodshim? Nobody buys Kodshim to eat [because it belongs to the Beis Hamikdash] and therefore maybe there would be no צובע with respect to Kodshim. [Rav Meir Shapiro]