sentences:  The Nirankari sect was founded in 1851 by Baba Dyal, a Sahajdhari, who aimed at refocusing Sikhs on the Adi Granth – the Sikh scripture, and reform the beliefs and customs of the Sikhs.Baba Dyal's son and successor, Baba Darbar Singh, collected and recorded the Baba Dyal's essential teachings and established Nirankari communities outside of Rawalpindi.The Nirankari were estimated to number in the thousands by the time of the third leader of the movement, Sahib Rattaji (1870–1909).