Guru Nanak read all his black deeds from his conversation with his companions. The night has well advanced. Guru Nanak started the recitation of the hymn. Sajjan heard the hymn and understood the meanings, he suspected that Guru Nanak had come to know his black deeds. Even if it is washed, that bronze will not be free from blackness.
Human bodies are like houses.
The bodies devoid of virtues are of no avail. The white clad holy men who rob those gone astray, are like storks at places of pilgrimage,who eat frogs. They cannot be called devotees. A man's shrewdness, wisdom and service are useless unless he gives up bad deeds. To become virtuous, one needs the help of the Lord.