SB 9.1.32
tad idam bhagavan aha
priyayah priya-kamyaya
sthanam yah pravised etat
sa vai yosid bhaved iti
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Thereupon, just to please his wife, Lord Siva said, “Any male entering this place shall immediately become a female!”