Chullin 16b-17a Interface Between Kodshim & Chullin - בשר תאוה ונחירה

From Matmonim: Daf Yomi by Rabbi David Lapin by R David Lapin.

Shechita as the way to prepare chullin meat, was only instituted after the entrance of Benei Yisrael to Eretz Yisrael 

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