He should not approach or make friend with anyone of the five kinds of eunuchs.

The first kind are the men who are born impotent (jātipaṇḍaka), those whose original constitutions do not allow them to get an erection. The second are eunuchs whose organs are small and weak (āpatpaṇḍaka). The third refers to the men who are impotent for a half of [every] month (pakṣapaṇḍaka), which means that for half a month they change [feeling] for women. The fourth are men who are impotent because of jealousy (īrṣyāpaṇḍaka): they cannot become potent by themselves, but seeing others perform sex, they immediately become jealous, and by way of jealousy they become potent. Fifth, the men who cannot ejaculate (āsaktaprādurbhāvīpaṇḍakaḥ). They can become potent only after others touch their bodies first.