In this poetry, the Guru is giving advise and pointing the "Vanjara" (the merchant or trader), in the correct spiritual direction. He is calling him a friend and telling him how to find the Lord.
The Guru says that the trader or merchant who remembers God's name will always be blessed just like Baba Makhan Shah Labana, who was a trader who was blessed by Guru Tegh Bahadur as he performed Ardas before the Guru to help save his doomed ship.
The trader who remembers the Lord at all times, the Guru says moves away from ego. The ones who remain attached to Maya and are egoistic are called "prostitute's son" as they do not recognise God as their father. Ego comes from wealth and it is common that traders are money minded and attached to their wealth.
So the Guru gives traders clear advise not to be attached emotionally to Maya or money because money will never go with you in the end - those attached to money will "depart crying". When you are young and in good health, recite the Lord's Naam because soon the youth and good health will leave and you will have no support. .....More