No, but he/she has to be strong and healthy enought that can take care for him/herself.
Usually the western monasteries woulod have a limit (perhaps 50-60, depending on character).
Bhikkhu Hiriko - ÑāṇasuciThe experts do not say that one is a sage in this world because of view, or learning, or knowledge, Nanda.
I call them sages who wander without association, without affliction, without desire.
The Buddha, Sn.V.8.2 (1078)http://pathpress.org