कुर्याद् घृतपशुं सङ्गे कुर्यात् पिष्टपशुं तथा । न त्वेव तु वृथा हन्तुं पशुमिच्छेत् कदा चन ॥ ३७ ॥
If he has a strong desire (for meat) he may make an animal of clarified butter or one of flour, (and eat that); but let him never seek to destroy an animal without a (lawful) reason.
Svayambhu (the Self-existent) himself created animals for the sake of sacrifices; sacrifices (have been instituted) for the good of this whole (world); hence the slaughtering (of beasts) for sacrifices is not slaughtering (in the ordinary sense of the word).