In Sikh history Mata Sahib Kaur is known as the Mother of the Khalsa. This honour was bestowed upon her by the Tenth Nanak, Guru Gobind Singh Ji. When a Sikh receives the gift of Khande Dee Pauhul (Amrit), he/she is told that from today onward your father is Guru Gobind Singh Ji and you mother is Mata Sahib Kaur Ji.
Mata Sahib Kaur Ji, whose name before taking Amrit was Mata Sahib Devan Ji, was born on the 1st November 1681 in a village called Rohtas, District Jehlum, in West Panjab, (now in Pakistan). Her mother’s name was Mata Jasdevi Ji and father’s name was Bhai Rama Ji. Her father, who was an ardent sewak (devotee) of Guru Gobind Singh Ji, influenced her to the extent that she wanted to devote her whole life in the service of the Guru Sahib. From her childhood, Mata Sahib Kaur Ji was a sweet and quiet natured girl. Because of the religious atmosphere at home, she was deeply influenced by Gurbaani during her formative years. It is possible that in her childhood she might have seen Guru Gobind Singh Ji at Sri Anandpur Sahib during the visit of her family.
Mata Ji guided the Khalsa Panth through period of crisis many times and issued eight decrees in the name of Khalsa.
When Guru Gobind Singh reached Abchal Nagar (Sri Hazoor Sahib), he sent Mata Sahib Kaur Ji to Delhi and gave her five weapons of the Sixth Nanak, Guru Hargobind Sahib Ji, for safekeeping. These weapons are today displayed at Gurdwara Rakabganj in Delhi. Mata Sahib Kaur Ji, passed away before Mata Sundri Ji. She left for heavenly abode at the age of sixty six in 1747 and her last rites were performed in Bala Sahib, Delhi.
Gurdwara Bala Sahib, Delhi
Father of Khalsa
Sri Guru Gobind Singh Ji
You are wrong if you think I had only four sons, I have thousands of sons and daughters and in them I see the four I sacrificed. Those four sons were four virtues from Waheguru Ji, their body pots were to be smashed so that those virtues could be poured into the Khalsa.
Ajit means unconquerable, my Khalsa would rather die fighting than run like a coward.
Jujhar means warrior, my Khalsa is powerful and strong.
Zorawar means Power, as long as my Khalsa is distinct I will give them all of my power.
Fateh is victory, my Khalsa will fight for Waheguru's victory.
O Mata Jee, when I see one Khalsa with these 4 qualities I see all four sons.
Source: Manvir Singh Khalsa's Blog