The Japji, composed by Guru Nanak, the founder of the Sikh faith, is the most important prayer of the Sikhs, and one of the most sublime and majestic examples of sacred poetry in any language. Comprising a series of hymns in praise of 'the One God Who is Truth', it opens the sacred book of the Sikhs, the Guru Granth Sahib, and is recited every morning by all practising Sikhs. The Rehras is a prayer of thanksgiving, recited at the end of the day in...