Bhagavad Gita 11.48

न वेदयज्ञाध्ययनैर्न दानैर्न च क्रियाभिर्न तपोभिरुग्रैः।एवंरूपः शक्य अहं नृलोकेद्रष्टुं त्वदन्येन कुरुप्रवीर॥

na vedayajñādhyayanairna dānairna ca kriyābhirna tapobhirugraiḥ |evaṃrūpaḥ śakya ahaṃ nṛlokedraṣṭuṃ tvadanyena kurupravīra ||

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).

It is not possible for man on earth to see what thou hast seen, O thou foremost hero of the Kuru-clan, through study of the scriptures, sacrifice or gift, ritual or rigorous austerity!

Our plain-language meaning of this verse is waiting for scholar review.