The term Khalsa was first appeared in the hukanamas (rule) of

Solution (By Examveda Team)

The term "Khalsa" first appeared in the hukamnamas (rules) of Guru Har Gobind Ji. The Guru introduced the concept of Khalsa, which is the collective body of initiated Sikhs, and laid down the principles for it. This significant development in Sikh history is attributed to Guru Har Gobind Ji's leadership.