Mahārāja Ambarīṣa, you have invited me to eat as a guest, but instead of feeding me, you yourself have eaten first. Because of your misbehavior, I shall show you something to punish you.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यो मामतिथिमायातमातिथ्येन निमन्त्र्य च । अदत्त्वा भुक्तवांस्तस्य सद्यस्ते दर्शये फलम्
yo māmatithimāyātamātithyena nimantrya ca | adattvā bhuktavāṃstasya sadyaste darśaye phalam
SB 9.4.45