According to Osho, there is no essential difference: in the spiritual dynamic, all disciples are 'female'—embodying receptivity, openness, trust and surrender—while all masters are 'male'—the active, penetrating principle. The master relates to the disciple’s feminine quality, regardless of biological sex. Hence a woman master functions energetically as 'male,' and a man disciple learns through feminine receptivity.
He says a master treats every seeker the same—as a receptive 'female' energy—so it’s about inner qualities, not whether you’re a man or a woman.