Guru Arjan for having composed and circulated them. The concern and the possibility of wrong propaganda, immoral teachings and inauthentic "Gurbani" led Guru Arjan to initiate a major effort to collect, study, approve and compile a written official scripture, and this he called "Adi Granth", the first edition of the Sikh scripture by 1604. The composition of both Prithi Chand and his followers have been preserved in the Mina texts of Sikhism, while the mainstream and larger Sikh tradition adopted the "Guru Granth Sahib" scripture that ultimately emerged from the initiative of Guru Arjan. According to the Sikh tradition, Guru Arjan compiled
Adi Shankara ("Bhāṣya"), original philosophical expositions ("Prakaraṇa grantha") and poetry ("Stotra"). However most of these are not authentic works of Adi Shankara and are likely to be works of his admirers or scholars whose name was also Shankaracharya. Piantelli has published a complete list of works attributed to Adi Sankara, along with issues of authenticity for most. Adi Shankara is most known for his systematic reviews and commentaries ("Bhasyas") on ancient Indian texts. Shankara's masterpiece of commentary is the "Brahmasutrabhasya" (literally, commentary on Brahma Sutra), a fundamental text of the Vedanta school of Hinduism. His commentaries on ten Mukhya (principal) Upanishads are