Explanation:

Khalsa  refers to both a special group of initiated Sikh warriors, as well as a community that considers Sikhism as its faith.The Khalsa tradition was initiated in 1699 by the last living Guru of Sikhism, Guru Gobind Singh. Its formation was a key event in the history of Sikhism.The founding of Khalsa is celebrated by Sikhs during the festival of Vaisakhi.Guru Gobind Singh started the Khalsa tradition after his father had been beheaded for resisting the religious persecution of non-Muslims (mainly Kashmiri Hindus) during the rule of the Mughal Emperor Aurangzeb.Guru Gobind Singh created and initiated the Khalsa as a warrior with a duty to protect the innocent from any form of religious persecution.The Khalsa redefined the Sikh tradition from the start. It formulated an initiation ceremony (amrit pahul, nectar ceremony) and rules of conduct for the Khalsa warriors. It created a new institution for the temporal leadership of the Sikhs, replacing the masands system maintained by the earlier Gurus of Sikhism. Additionally, the Khalsa provided a political and religious vision for the Sikh community.Upon initiation, a Khalsa Sikh was given the titles of Singh (male) and Kaur (female).