Śrīmad-Bhāgavatam 1.2.10--Hindi , Delhi , 1973-11-15

Prabhupāda:

kāmasya nendriya-prītir
lābho jīveta yāvatā
jīvasya tattva-jijñāsā
nārtho yaś ceha karmabhiḥ

So, our foreign students will excuse me I promised to speak in Hindi this night.