Werset 3.123.13.23.33.43.53.63.73.83.93.103.113.123.133.143.153.163.173.183.193.203.213.223.233.243.253.263.273.283.293.303.313.323.333.343.353.363.373.383.393.403.413.423.43

The gods, nourished by the sacrifice, will give you the desired objects. So, he who enjoys the objects given by the gods without offering (in return) to them, is verily a thief.

Nourished by sacrifice, the gods will give you the enjoyments you desire. One who enjoys what they give without offering anything to them in return is simply a thief.

The verse states the moral consequence of the cycle of sacrifice. What we enjoy in life, food, rain, health, is given to us by powers beyond ourselves. To take these gifts without giving anything back is a kind of theft. The word stena, thief, is strong and deliberate. It suggests that ownership is never absolute; everything we have is received. Many readers extend this beyond ritual to a general ethic of gratitude and responsibility toward nature and society, which sustain each person's life.