He creates the compilation known as the Adi Granth, which are the sayings and the hymns of the previous gurus, including his own. The Adi Granth, as we will see, will eventually evolve into the Guru Granth Sahib, which is considered not only the Sikh holy book, but also the last and final of the gurus. In Ramdaspur, later to be known as Amritsar, Guru Arjan builds the Harmandir Sahib, which is intended to be a place of worship for people of all religions. They have a tradition of langar, where they feed anyone who comes from any faith. And today, the Harmandir Sahib would later be known as the Golden Temple, where later Raja would plate it with gold, is the largest free kitchen in the world. Guru Arjan is also known as the first martyr in the Sikh faith. As we've talked about, the early Mughals were relatively tolerant.