स्वाध्यायज्ञानयज्ञाश्च यतयः संशितव्रताः।।4.28।।
4.28 Similarly, others are performers of sacrifices through wealth, through austerity, through yoga, and through study and knowledge; others are ascetics with severe vows.
4.28 Some Karma Yogins perform the sacrifice of material objects. Some worship the gods with materials honestly acired. Some practise charity, some engage themselves in sacrifices and in making oblations into the sacred fire. All these perform sacrifice with material objects. Some do the sacrifice of austerity by devoting themselves to Krcchra, Candrayana, fast, etc. Others perform the sacrifice of Yoga. Some devote themselves to making pilgrimages to sacred sanctuaries and holy places. Here the term Yoga means pilgrimages to sacred sancturaries and holy places as the context relates to aspects of Karma Yoga. Some are devoted to recitation of Vedic texts and some to learning their meaning. They are all devoted to the practice of self-control and of strict vows, i.e., they are men to steady resolution.
Dravyayajnaas tapoyajnaa yogayajnaastathaapare; Swaadhyaayajnaana yajnaashcha yatayah samshitavrataah.
dravya-yajñāḥ—offering one’s own wealth as sacrifice; tapaḥ-yajñāḥ—offering severe austerities as sacrifice; yoga-yajñāḥ—performance of eight-fold path of yogic practices as sacrifice; tathā—thus; apare—others; swādhyāya—cultivating knowledge by studying the scriptures; jñāna-yajñāḥ—those offer cultivation of transcendental knowledge as sacrifice; cha—also; yatayaḥ—these ascetics; sanśhita-vratāḥ—observing strict vows