Bhagavad Gita

Chapter 15: Puruṣottama-yoga: – The Supreme IndwellerConclusion

ओं तत्सदिति श्रीमद्भगवद्गीतासूपनिषत्सु ब्रह्मविद्यायां योगशास्त्रे श्रीकृष्णार्जुनसंवादे पुरुषोत्तमयोगो नाम पञ्चदशोऽध्याय: ।

oṃ tat-sad-iti śrīmad-bhagavad-
gītāsūpaniṣatsu brahma-vidyāyāṃ yoga-
śāstre śrīkṛṣṇārjuna-saṃvāde puruṣottama-
yogo nāma pañca-daśo’dhyāya:

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

Thus ends the fifteenth chapter entitled Purushottama Yoga, during the Srikrishna-Arjuna dialogue in Śrīmad Bhagavad Gita, constituting Yoga-śāstra, which falls within Brahmavidya as presented in the Vedic Upanishads.