Chapter 11, Verse 48
Part of 11: Viśhwarūp Darśhan Yog — विश्वरूपदर्शनयोगन वेदयज्ञाध्ययनैर्न दानै र्न च क्रियाभिर्न तपोभिरुग्रैः। एवंरूपः शक्य अहं नृलोके द्रष्टुं त्वदन्येन कुरुप्रवीर॥
na veda-yajñādhyayanair na dānair na cha kriyābhir na tapobhir ugraiḥ evaṁ-rūpaḥ śhakya ahaṁ nṛi-loke draṣhṭuṁ tvad anyena kuru-pravīra
Neither by the study of the Vedas, nor by gifts, nor by sacrifices, nor by severe austerities, can I be seen in this form in the world of men by any other than yourself, O great hero of the Kurus (Arjuna).
Mere cramming of the texts of the Vedas without knowing the meaning will not do. A study of the sacrifices also is necessary. One should know the meaning of these, also. Dana Charity such as a Tula Purusha (gift of gold eal in weight of a man) Kanyadana (gift of ones daughther in marriage), gift of a cow, rice, etc. Kriya Rituals such as Agnihotra. Tapas Such as the Chandrayana Vrata. (This is a kind of Vrata or observance. The daily consumption of food is reduced by one mouthful every day for the dark half of the month beginning with the fullmoon. Then the food is increased by one mouthful every day during the bright fortnight during the increase of the moon. This Vrata (observance) is a great purifier of the mind. It destroys sins.)