Answer

Yes, generally you may drink water after completing Besna and Pratikraman at 4 AM, if your vow or niyam allows it and if it is already permitted according to the rule you are following.

Explanation

In Jain practice, whether you can drink water depends on the specific niyam, pachchakkhan, or tapasya you have taken.

For example:

• If you had taken a vow of Chauvihar, then you should not drink water until the proper time of completing that vow.
• If you had taken Tivihar, then boiled and properly filtered water may be allowed according to the vow’s timing and tradition.
• If your Besna and Pratikraman were completed and you have not taken a restriction against water, then drinking water is generally allowed.

Spiritual Understanding

In Jain Dharma, the key point is to respect the exact vow you have taken. Pratikraman purifies past faults, but it does not automatically cancel or change a niyam or pachchakkhan.

Takeaway

If you had taken Chauvihar, do not drink water until the vow is properly completed. If no such restriction was taken, or if your niyam permits water, then you may drink water after Pratikraman.