Istinja
Q: In toilet or istinga we should use lumps of earth 3 times or 1 or 5. And we heard that the method of using earth is different for cold season and warm season. In cold season the prostrate glands are compressed so first earth should be pushed from front to back and second from back to front and third from front to back and in hot season as to prostrate glands are loosen so you should use conversely. Is it related to sunnah.