Bhagavad Gita

Chapter 3: Karma-yoga: – Transforming All Activities into YogaConclusion

ओं तत्सदिति श्रीमद्भगवद्गीतासूपनिषत्सु ब्रह्मविद्यायां योगशास्त्रे श्रीकृष्णार्जुनसंवादे कर्मयोगो नाम तृतीयोऽध्याय:।

oṃ tat-sad-iti śrīmad-bhagavad-
gītāsūpaniṣatsu brahma-vidyāyāṃ yoga-
śāstre śrīkṛṣṇārjuna-saṃvāde karma-yogo
nāma tṛtīyo’dhyāya:

Om – the symbol of Brahman, tat – that singular Reality (Brahman), sat – the ever abiding presence (Brahman).

Thus ends the third chapter entitled Karma Yoga during the Sri Krishna-Arjuna dialogue in Śrīmad Bhagavad Gita, constituting Yoga-śāstra, which falls within Brahmavidya as presented in the Vedic Upanishads.