佛說五無返復經 1.22

1.22

The brahmacārin said to the Buddha, "I saw a father and son plowing the land and sowing seed. When the son died on the ground, the father felt no sorrow, but instead asked for food, and went on to speak to me about impermanence. The mother, the wife, the sister, and the servant were likewise completely without sorrow. This is a great transgression, lacking any sense of mutual duty!"