Kamasutra 2.1.29

2.1.29

tac ca na/ yugapad anekārthasiddhir api dṛśyate/ yathā meṣayor abhighāte kapitthayor bhede mallayor yuddha iti/ na tatra kārakabheda iti ced ihāpi na vastubheda iti/ upāyavailakṣaṇyaṃ tu sargād iti tad abhihitaṃ purastāt/ tenobhayor api sadṛśī sukhapratipattir iti//

On this again some may say that when different persons are engaged in doing the same work, we find that they accomplish the same end or purpose; while, on the contrary, in the case of men and women we find that each of them accomplishes his or her own end separately, and this is inconsistent. But this is a mistake, for we find that sometimes two things are done at the same time, as for instance in the fighting of rams, both the rams receive the shock at the same time on their heads. Again, in throwing one wood apple against another, and also in a fight or struggle of wrestlers. If it be said that in these cases the things employed are of the same kind, it is answered that even in the case of men and women, the nature of the two persons is the same. And as the difference in their ways of working arises from the difference of their conformation only, it follows that men experience the same kind of pleasure as women do.