Alas, what a regrettable deed I have committed because of my lack of intelligence and my pride in my material opulences. I failed to show respect to my spiritual master when he entered this assembly, and thus I have insulted him.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अहो बत मयासाधु कृतं वै दभ्रबुद्धिना । यन्मयैश्वर्यमत्तेन गुरुः सदसि कात्कृतः
aho bata mayāsādhu kṛtaṃ vai dabhrabuddhinā | yanmayaiśvaryamattena guruḥ sadasi kātkṛtaḥ
SB 6.7.11