sri-bhagavan uvaca
balam balavatam caham
kama-raga-vivarjitam
dharmaviruddho bhutesu
kamo’ smi bharatarsabha
(Knowledge of the Absolute, Text 11 Chapter 7)
Meaning: I am the strength of the strong, devoid of passion and desire. I am sex life which is not contrary to religious principles, O lord of the Bharatas [ Arjuna]
Bhagavad Gita: God is the strength of the strong, devoid of passion and desire [Knowledge of the Absolute (Text 11 Chapter 7)]