A grain of rice covered by its husk when sowed yields many time more such grains and as rice (a staple food item) do much good in the world.
The rice remains protected against insects as long as it remains in the husk. It remains preserved for long.
Outside the husk, rice breaks. It acquires a darkish hue and slight bitterness. It loses its worldly importance.
So does a Sikh of Guru following the advice of Guru lives a householder's life without being attached and engrossed in it. He does good to others while living with his family members. He does not renounce the family and lives in jungles to emancipate hims