Verse
न वेदयज्ञाध्ययनैर्न दानैर्-न च क्रियाभिर्न तपोभिरुग्रैः ।एवं रूपः शक्य अहं नृलोकेद्रष्टुं त्वदन्येन कुरुप्रवीर ॥
Neither by the study of Vedas and sacrifices, nor by gifts or ceremonial rites or severe austerities, this form of mine can be seen by any other than thyself, O foremost of Kurus.
Gītā 11·48