Not that seeking after sex in Vrndavana. That means such person will have to take birth as monkey next life. Monkey. Because they have taken shelter of Vrndavana, and still they're indulging, monkey's business, so they have to… It is Krsna's mercy. Tat te 'nukampam su-samiksamanah [SB 10.14.8].

In Vrndavana the land, transcendental land, that will not go in vain. But these persons who are indulging unnecessary sex life in Vrndavana, they'll have to take birth as monkeys in Vrndavana, and then next life they'll be liberated. So otherwise, why in Vrndavana the monkeys? They are also devotees, but they could not proceed nicely. So animal life means stopping sinful activities, and whatever sinful reaction is there, in one life finished.

We should be very, very careful. Dhama, dhama-aparadha. In the dhama… In other places if you chant Hare Krsna, the result of such chanting will be increased thousand times if you chant in Vrndavana. Similarly, in other place, the sinful activities, if you commit that sinful activities in Vrndavana, then it will be thousand times increased. So we have to be very careful.

(Srila Prabhupada, speaking in Vrndavana; September 10, 1976)