Bhagavad Gita 11.41

साखेति मत्वा प्रसभं यदुक्तं हे कृष्ण हे यादव हे साखेति |
अजानता महिमानं तवेदं मया प्रमादात्प्रण्येन वापि

Translation

Thinking of You as my friend, I presumptuously addressed You as, “O Krishna,” “O Yadav,” “O my dear Friend.” I was ignorant of Your majesty, showing negligence and undue affection.