satyaṃ vada dharmaṃ cara na hiṃsyāt kaścan

tvam (you) satyaṃ (truth) vada (say) dharmaṃ (righteousness) cara (follow) kaścan (anyone) na (not) hiṃsyāt (should harm)

Advaita Vedānta (Ādi Śaṅkarācārya): This verse from the Chāndogyopaniṣad underscores the fundamental principles of truth, dharma, and non-violence. According to Śaṅkarācārya, the pursuit of truth (satyaṃ vada) is not merely about speaking the truth but about realizing the ultimate truth, which is the non-dual nature of Brahman. The instruction to follow dharma (dharmaṃ cara) is about aligning one's actions with the natural order that reflects this non-dual reality. The admonition against harming any being (na hiṃsyāt kaścan) points to the understanding that all beings are essentially the Self (ātman), and thus, harming others is tantamount to harming oneself. This verse, in the context of Advaita Vedānta, serves as a guide for the seeker to realize the unity of all existence and to cultivate a mindset that reflects this unity in thought, word, and deed. Śaṅkarācārya's commentary on the Upadeśasāhasrī and other works elaborates on how such practices lead to the realization of the brahman-ātman identity.

Vaiṣṇava tradition (Rāmānujācārya / Madhvācārya): The Vaiṣṇava tradition interprets this verse through the lens of bhakti and the relationship between the jīva (individual soul) and Īśvara (the Supreme Lord). For Rāmānujācārya, speaking the truth and following dharma are essential aspects of cultivating devotion to Īśvara. The instruction to harm no one reflects the compassionate nature of the Supreme, whom the devotee seeks to emulate. Rāmānujācārya's concept of 'śeṣa-śeṣi-bhāva' (the relationship between the Lord and His servants) underscores that the jīva's duty is to serve Īśvara and all beings, recognizing them as reflections of the Divine. This verse is seen as a guiding principle for the Vaiṣṇava devotee to live a life of service, truth, and non-violence, ultimately leading to the attainment of prema (love) for the Supreme. Madhvācārya, with his emphasis on the difference between the individual soul and the Supreme, would also highlight the importance of following dharma as a means to achieve liberation, albeit with a strong emphasis on the ontological distinction between the jīva and Īśvara.

Neo-Vedānta (Swami Vivekānanda / S. Rādhākrishnan): Swami Vivekānanda and S. Rādhākrishnan, proponents of Neo-Vedānta, see this verse as embodying universal principles applicable to contemporary life. For Vivekānanda, the pursuit of truth, following dharma, and non-violence are integral to the development of the individual and society. He believed that these principles, when practiced sincerely, can lead to personal transformation and social upliftment. In his lectures and writings, such as 'The Complete Works of Swami Vivekananda', Vivekānanda often emphasized the importance of applying these principles in practical life, advocating for a blend of spiritual growth and service to humanity. Rādhākrishnan, with his philosophical background, viewed this verse as an affirmation of the ethical and moral foundations of human existence, cutting across religious and cultural boundaries. He saw the realization of truth and the practice of non-violence as essential for achieving global understanding and peace, reflecting his broader vision of a universal and inclusive philosophy that underlies all human experience.

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