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"Umāsvāti alias
Umāsvāmi is one of the earliest and the most illustrious authors of the Jain philosophical views. His Tattvärtha [-adhigama-]sutra is hailed as the bedrock of the Jain philosophy and enjoys the same prestige among the Jainas as perhaps the Bhagavadgītā among the Hindus or the holy Bible among the Christians. It is also one of the very few texts which is highly revered and held in high esteem by both the Shvetambaras and
the Digambaras."