In Jainism, the Tattvartha Sutra is one of the most important scriptures, authored by Acharya Umasvati (Umasvami). It systematically presents the Jain philosophy in concise aphorisms (sutras), covering the nature of reality, the soul, karma, the path to liberation, and ethical conduct.

There isn’t a single “best” sutra, as each aphorism serves a unique purpose and is valued for its own significance. However, a very famous and foundational sutra from Tattvartha Sutra is:

“Samyag-darśana-jnāna-cāritrāṇi mokṣa-mārgah” (Tattvartha Sutra 1.1)

Translation: “Right faith (Samyak Darshan), right knowledge (Samyak Jnana), and right conduct (Samyak Charitra) are the path to liberation (moksha).”

This sutra is often regarded as the essence of Jain spiritual practice, summarizing the core path every aspirant should follow to attain liberation. It is highly revered in all Jain sects.

Ultimately, the “best” sutra depends on what aspect of Jain philosophy or practice one is seeking guidance on, but Tattvartha Sutra 1.1 is universally acknowledged as a central guiding principle.