I know this. An Indian Holy Man told me once. (Yes, really.)
After you've shíte you must remain in position until a stream of urine is passed. This signifies that the poopsession is finished.
This dung finishing urine stream is also useful if you have conjuctivtus; collect the mid-stream urine only (not the start or the finish) and bathe the eyes with it.
He also taught me to make a mashed potato poultice for piles.