HAṬHĪ SIṄGH (d. 1783) was the son of Ajīt Siṅgh, adopted son of Gurū Gobind Siṅgh's widow Mātā Sundarī. When Mātā Sundarī disowned Ajīt Siṅgh for his profligacy and moved from Delhi to Mathurā, she took with her Haṭhī Siṅgh and his mother, Tārā Bāī. As he grew up, Haṭhī Siṅgh, too, like his father, became a pretender to gurūship. He used to substitute his own name for Nānak in scriptural hymns and claim them as his own. Disgusted with his behaviour, Mātā Sundarī discarded him and came back to live at Delhi. Haṭhī Siṅgh, after the sack of Mathurā by Ahmad Shāh Durrānī, migrated to Burhānpur in Madhya Pradesh, where he established a saṅgat of his own. He died there without an heir in 1783. His samādh, i.e. memorial shrine, is situated in the premises of Gurdwārā Baṛī Saṅgat, Burhānpur.