Guru Nanak inquired and learnt that someone had failed to keep his promise made to a holy man named Hazrat Hamza Ghaus. Hazrat Hamza Ghaus had flown into a rage and made a vow to meditate for 40 days and at the completion of his meditation the whole city would be doomed. Hearing this Guru Nanak sat down under a Ber tree close to the place where Hazrat Hamza was meditating and loudly sang his Gurbani. It disturbed the maditation of Hamza Ji, who came to Guru Nanak and angrily asked who he was and why he wanted to save the lying villagers. Guru Ji replied "Hamza, you are not supposed to punish a whole city for the misconduct of a single person." Hamza Ji was not satisfied. Guru Ji then explained to him that there were many souls in the city who understood the purpose of life. Guru Ji gave two paisas to Bhai Mardana to buy "falsehood" and "truth" from the market.