The Compendium of Bheḷa 1.7.2

1.7.2

na tvanāpyāyitabalaḥ samāgacchet tu yoṣitaḥ | nāyoniṣu prayuñjīta tiryagyonīś ca varjayet ||

However, one should not approach women when one's strength has not been replenished; / one should not practice in non-vaginal parts, and should avoid animal wombs.