Bhagavad Gita · 11.41

सखेति मत्वा प्रसभं यदुक्तंहे कृष्ण हे यादव हे सखेति।अजानता महिमानं तवेदंमया प्रमादात्प्रणयेन वापि॥

sakheti matvā prasabhaṁ yad uktaṁ he kṛṣhṇa he yādava he sakheti ajānatā mahimānaṁ tavedaṁ mayā pramādāt praṇayena vāpi

Thinking of you as a friend, I have presumed to address you as 'O Krishna,' 'O Yadava,' 'O friend' — not knowing your true greatness, out of negligence or affection.

— Bhagavad Gita 11.41

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)