One verse

Srimad Bhagavatam 2.10.26

2.10.26

निरभिद्यत शिश्नो वै प्रजानन्दामृतार्थिन: । उपस्थ आसीत् कामानां प्रियं तदुभयाश्रयम् ॥ २६ ॥

nirabhidyata sisno vai prajanandamrtarthinah upastha asit kamanam priyam tad-ubhayasrayam

nirabhidyata
came out
sisnah
the genitals
vai
certainly
praja-ananda
sex pleasure
amrta-arthinah
aspiring to taste the nectar
upasthah
the male or female organ
asit
came into existence
kamanam
of the lustful
priyam
very dear
tat
that
ubhaya-asrayam
shelter for both.

Thereupon, for sexual pleasure, begetting offspring and tasting heavenly nectar, the Lord developed the genitals, and thus there is the genital organ and its controlling deity, the Prajapati. The object of sexual pleasure and the controlling deity are under the control of the genitals of the Lord.