佛說目連問戒律中五百輕重事經 2.188

2.188

問：「比丘病不能行，得乘車馬不？」答：「雄者盡得。雌者無想犯捨墮，有想犯決斷，不知是雌無罪。」

Question: "If a bhikṣu is ill and unable to walk, may he ride in a cart or on a horse or not?" Answer: "Male ones are all permitted. For a female one, without lustful thoughts, he commits a naiḥsargika-pāyattika; with lustful thoughts, he commits a saṃghāvaśeṣa; if he does not know it is female, there is no offense."