Guru Nanak brought the Word of God to manifestation upon the Earth. Through his Hymns and Prayers, he inspired and uplifted humankind to live a life of truth, righteousness and spirituality. These enlightening words were sung by his companions, Bala and Mardana, and by the Sangats which grew up around Guru Nanak. In his later years, at Kartarpur, it became customary for the members of the Sikh community to sing certain hymns on a daily basis: Japji in the morning; So Dar and So Purakh, the beginnings of Rehiras, in the evenings.