Sāṅkhya Enumeration of Tattvas, Distinction of Puruṣa–Prakṛti, and the Mechanics of Birth and Death
चत्वार्येवेति तत्रापि तेज आपोऽन्नमात्मन: । जातानि तैरिदं जातं जन्मावयविन: खलु ॥ २१ ॥
catvāry eveti tatrāpi teja āpo ’nnam ātmanaḥ jātāni tair idaṁ jātaṁ janmāvayavinaḥ khalu
也有人主张四种根本要素:火、水、食(地)三者由第四——自我(我性)而出。诸要素既立,便生起宇宙显现,一切物质造化皆在其中展开。
This verse explains that the embodied being and its body arise through the principles of fire (tejas), water (āpaḥ), and food/earth (annam), while the self (ātmā) is distinct and foundational to the experience of embodiment.
Kṛṣṇa is teaching Uddhava analytical knowledge (Sāṅkhya) to distinguish the self from the body by tracing the body’s origin to material principles, thereby strengthening detachment and steady devotion.
See the body as a product of material conditions (nutrition, fluids, heat/metabolism) while remembering you are the conscious self; this reduces anxiety and possessiveness and supports a more devotional, disciplined life.