Answer

Yes, in Jain practice there is a commonly followed rule related to 48 minutes, called one muhūrta.

During Paryushan, many Jains try to finish eating within a limited and mindful time period, often understood as one muhūrta — approximately 48 minutes.

Explanation

In Jain tradition:

• One muhūrta is traditionally taken as about 48 minutes.
• During Paryushan, meals are often taken with extra discipline, awareness, and restraint.
• Some people observe the practice of completing their meal within one muhūrta to avoid excessive attachment to taste, prolonged eating, and carelessness.

However, the exact strictness of this rule may vary depending on:

• family tradition,
• sect tradition,
• guru guidance,
• the type of vow or tapas being observed.

Spiritual Understanding

The deeper purpose is not just the number “48 minutes,” but the Jain principle of:

• samyam — self-restraint,
• jagruti — awareness,
• aparigraha — reducing attachment,
• ahimsa — carefulness even while eating.

During Paryushan, eating should be simple, limited, peaceful, and done with spiritual awareness.

Takeaway

The 48-minute meal rule is a respected Jain discipline followed by many during Paryushan, but its exact observance should be followed according to your family tradition or guidance from your guru.