[1][2] She was the daughter of Har Bhagwan Devan (alias Ramu), a Bassi Khatri of Rohtas, Jhelum District.

She was offered to be a bride of Guru Gobind Singh by her father Bhai Rama, a devout Nanak Naam Leva Sikh, and the nuptials took place on 15 April 1700 at Anandpur.

[2] The Guru proclaimed her to be the Mother of the Khalsa and since then novitiates have been declared to be the sons and daughters of Gurū Gobind Siṅgh and Mātā Sāhib Devāṅ.

According to Bhai Kahn Singh Nabha in the Mahan Kosh, Mata Sahib Devan was present during the creation of Khalsa Panth and participated in making Pahul by adding sugar wafers[6] but the Twarikh Guru Khalsa refutes this claim.

[7] The Twarikh states that Guru Gobind Singh's first wife, Mata Jito, put sugar wafers in the Pahul and that Mata Sahib Devan was not married to Guru Gobind Singh at that time.