The disciplinary regulations for bhikkhus and bhikkhunis are intended to create a life that is simple and focused, rather than one of deprivation or severe asceticism. However, celibacy is a fundamental part of this form of monastic discipline.
Then We caused Our messengers to follow in their footsteps; and We caused Jesus, son of Mary, to follow, and gave him the Gospel, and placed compassion and mercy in the hearts of those who followed him. But monasticism they invented - We ordained it not for them - only seeking Allah's pleasure, and they observed it not with right observance. So We give those of them who believe their reward, but many of them are evil-livers.
Unique among Jewish communities is the monasticism of the Beta Israel of Ethiopia, a practice believed to date to the 15th century.