This is a quotation from the Bhagavad-gītā (BG 11.41-42). In this verse, Arjuna is addressing Kṛṣṇa, who was exhibiting His universal form on the Battlefield of Kurukṣetra.
Thinking of You as my friend, I have rashly addressed You "O Krsna," "O Yadava," "O my friend," not knowing Your glories. Please forgive whatever I may have done in madness or in love
Expressions researched:
"Thinking of You as my friend, I have rashly addressed You “O Kṛṣṇa,” “O Yādava,” “O my friend,” not knowing Your glories. Please forgive whatever I may have done in madness or in love"
Sri Caitanya-caritamrta
CC Madhya-lila
“‘Thinking of You as my friend, I have rashly addressed You “O Kṛṣṇa,” “O Yādava,” “O my friend,” not knowing Your glories. Please forgive whatever I may have done in madness or in love. I have dishonored You many times, jesting as we relaxed, lay on the same bed, or sat or ate together, sometimes alone and sometimes in front of many friends. O infallible one, please excuse me for all those offenses.’.
“‘Thinking of You as my friend, I have rashly addressed You “O Kṛṣṇa,” “O Yādava,” “O my friend,” not knowing Your glories. Please forgive whatever I may have done in madness or in love. I have dishonored You many times, jesting as we relaxed, lay on the same bed, or sat or ate together, sometimes alone and sometimes in front of many friends. O infallible one, please excuse me for all those offenses.’