Adi Dev: The First Man by Jagdish Chander Hassija is a spiritual biography chronicling the life and mission of Lekhraj Kripalani—later known as Prajapita Brahma, the founder of the Brahma Kumaris movement. Written originally in Hindi and later translated into English, the book blends narrative storytelling with philosophical insights, offering a glimpse into the early days of the movement and the divine revelations that shaped its teachings.