Let’s match the columns one by one:
1. First stage of āśramas — iv. Brahmacarya: This is the student stage in the āśrama system.
2. Buddhist Ethics — iii. Eight fold path: Core ethical principles of Buddhism.
3. Rigveda — i. Cosmic order: The Rigveda discusses Ṛta, the principle of cosmic order.
4. Nīti Śatakam — ii. Hundred verses on ethics: A classical Sanskrit text by Bhartṛhari.