Das Lakshan are the ten primary observances or signs of a Jain ascetic’s conduct as they strive for kevala jnana and complete self-control. They describe ideal disciplined behavior for a monk/nun, and they are meant to keep passion and attachment in check.

On drinking coffee:

• For Jain monks and nuns (the ascetic Sangha), coffee (and other stimulants or intoxicants) is not allowed. The code of conduct in Das Lakshan aims at complete self-restraint, and caffeine would fall under substances to be avoided because it affects mind, body, and self-control.
• For lay Jains (śrāvakas/śrāvikas), there isn’t a universal, rigid rule in the traditional Das Lakshan framework, but many Jain teachers and communities advise avoiding stimulants like tea and coffee as part of practicing ahiṃsā, purity of mind, and discipline—especially during vrata (fasting) days, meditation, or periods of austerity. Some households may permit limited consumption, but the emphasis in Jain guidance is to cultivate self-restraint and mindfulness, which often means choosing non-stimulants.

Differences between Digambar and Shwetambar:

• Both traditions generally discourage intoxicants and seek greater self-control. In practice, many Digambar and Shwetambar authorities today encourage avoiding tea/coffee as part of a mindful, non-violent lifestyle. There can be differences in exact prescriptions for specific foods or beverages in certain monastic codes, but the overarching aim—discipline and non-attachment—aligns.

If you’re unsure what your specific community or guru advises, it’s best to ask your local monk/nun or trusted Jain teacher for the guidance most appropriate to your tradition and current vrata.