MUMTAZ, according to Sarup Singh Kaushish, Guru kian Sakhian, was the daughter of Nihang Khan, Muslim chief of Kotla. Nihang Khan near Ropar. She served the Sikh warrior Bhai Bachittar Singh who, severely wounded in a skirmish after the evacuation of Anandpur in December 1705, had been brought to her father`s house. To throw the pursuers off the scent, Nihang Khan told them that the wounded person in the house was his son-in-law.

Even Mumtaz declared Bhai Bachittar Singh to be her husband. The latter, though well looked after by his hosts, did not survive and succumbed to his injuries.

References :

1. Padam, Piara Singh, and Giani Garja Singh, eds. Guru kian Sakhian. Patiala, 1986