In Jainism, self-control (brahmacharya) is considered one of the key ethical principles, especially for those who are serious disciples, monks, or nuns. Masturbation is generally regarded as a violation of the vow of celibacy (brahmacharya vrata). Jain scriptures and teachings emphasize the importance of controlling desires and passions, including sexual urges, as they are believed to cause bondage of karma and hinder spiritual progress.

For lay followers (śrāvakas), complete celibacy is expected only if they take the vow of total renunciation (celibate life), but even for householders, sexual conduct is advised to be limited and only within the bounds of marriage, with the purpose of procreation, not pleasure. Masturbation is discouraged because it is seen as an indulgence in sensual pleasures and attachment, which contradicts the path of self-restraint and purification.

For initiated monks and nuns, any form of sexual activity, including masturbation, is strictly prohibited and regarded as a serious lapse in conduct.

In summary: According to Jainism, masturbation is discouraged for laypersons and strictly forbidden for monks and nuns, as it goes against the principle of brahmacharya and the pursuit of spiritual purity.