Anandakanda 1.8.4

1.8.4

strīklībabālakānāṃ ca na hi yojyaṃ rasāyanam /
bālāḥ pañcadaśābdā ye kumārāṃstriṃśadabdakāḥ //

Rejuvenation therapy must never be administered to women, eunuchs, or children. / Those fifteen years old are boys; up to thirty years they are young men;