NAGĀHĪĀ, BHĀĪ, son of Kālā, was, according to Giānī Giān Siṅgh, Panth Prakāsh, elder brother of the revered Bhāī Manī Siṅgh. Bhāī Kālā entered the Sikh fold in the time of the Sixth Gurū, Gurū Hargobind, whom he first met at Akoī, near Saṅgrūr. He also rendered homage to the Ninth Gurū, Gurū Tegh Bahādur, at Anandpur along with his sons Nāgahīā and Manīā (later Bhāī Manī Siṅgh). Nagāhīā in his turn led all of his seven sons to Amritsar to visit Bhāī Manī Siṅgh, then high priest of the Harimandar Sāhib. All of them received the rites at his hands and were admitted into the order of the Khālsā. Nagāhīā's sons, Aghaṛ Siṅgh and Tharāj Siṅgh, proved fearless warriors and took part in many a campaign, including the battle of Sirhind against the Mughal governor Zain Khān (1764). They had earlier slain Muftī 'Abd ul-Hanān who had ordered execution of Bhāī Manī Siṅgh and 'Abd ul-Razāk, the executioner.