If a householder wishes to slay (for food), or to cut down a tree (for fuel), he should do both the acts according to the ritual laid down in the Yajur for that much is due to both animate and inanimate creation. The householder should never sleep during the day, or in the first or the last part of the night.
प्राणी वा यदि वाप्राणी संस्कारं यजुषार्हति। न दिवा प्रस्वपेज्जातु न पूर्वापररात्रिषु॥