SB 11.26.22
athapi nopasajjeta
strisu strainesu cartha-vit
visayendriya-samyogan
manah ksubhyati nanyatha
Translation:
Yet even one who theoretically understands the actual nature of the body should never associate with women or with men attached to women. After all, the contact of the senses with their objects inevitably agitates the mind.