"What is that word, what is that virtue, and what is that magic mantra?
What are those clothes, which I can wear to captivate my Husband Lord? 126
Humility is the word, forgiveness is the virtue, and sweet speech is the magic mantra.
Wear these three robes, O sister, and you will captivate your Husband Lord. 127 "
- Bhagat Fareed ji in Guru Granth Sahib Ji pg 1384
In 1704 Guru Gobind Singh ji went to Machiwara after leaving Anandpur Sahib (now in the northern city of India). During those severe hardship days some of the rajas (Kings) refused to offer help to Guru Gobind Singh due to the fear of death as Aurangzed (the then Muslim King) was after the life of the Guru Gobind Singh and his family.
But when Guru Sahib reached Raikot state, the Muslim chief Rai Kalha welcomed him and urged to stay there being his guests for as long as he wanted. Guru spent around 16 days with Rai Kalha.
It was in Raikot that Guru Gobind got the most tragic news of the shaheedi of the two Sahibzada's and Mata Gujri . The news was brought from Sarhind by Noora Mahi who was deputed by Rai Kalha for the seva of Guru Sahib.Guru Gobind Singh during his stay asked Noora Mahi to give him milk in Ganga Sagar, which was a part of his personal belongings. Noora Mahi said that his buffalo did not give milk and even if it did the milk will not stay in Ganga Sagar as it had many holes in it. Then Guru Gobind Singh told him to recite the name of God and start milking the buffalo. To the utter surprise of Noora Mahi, the buffalo gave milk and it did not pour out. Before leaving Raikot, in appreciation of the services and hospitality extended by Rai Kalha, a Muslim chief, who risked his own and his family's lives, Guru Gobind Singh presented Ganga sagar and a sword to Rai kalha as personal gifts.
related news article: http://www.punjabnewsline.com/content/view/1368/38/