Sāṅkhya of Creation and Annihilation
Sarga–Nirodha-viveka
यस्तु यस्यादिरन्तश्च स वै मध्यं च तस्य सन् । विकारो व्यवहारार्थो यथा तैजसपार्थिवाः ॥ १७ ॥
yas tu yasyādir antaś ca sa vai madhyaṁ ca tasya san vikāro vyavahārārtho yathā taijasa-pārthivāḥ
That which is a thing’s beginning and its end is also present in its middle. Transformation is merely a name and form for practical dealings—like bracelets and earrings made of gold, or pots and saucers made of earth. Since gold and earth exist before the products appear and remain after they are destroyed, they must also be present during the manifest phase, supporting the product as its very basis.
The Lord here explains that the original cause is certainly present in its effect, citing the example of gold and clay functioning as the causal ingredients of many different products in which gold and clay continue to be present. For our convenience, we assign different names to temporary products, although their essential nature continues to be that of the ingredient, and not of the temporary product.
It says that change is described for practical convention, while the underlying substance that appears as beginning, middle, and end remains the same.
To give Uddhava steady discrimination: seeing that material forms arise and dissolve, while the underlying cause/substance persists, one becomes detached and fixed in spiritual understanding.
Treat shifting circumstances—success, loss, praise, blame—as temporary ‘forms’ and focus on the enduring spiritual goal: devotion and inner steadiness rather than anxiety over changing externals.