And I also heard the Prophet (peace and blessings be upon him) say that I will have a cistern whose distance will be as much as between Aylah and Sana'a, and its length and width will both be equal. Two streams from Paradise will flow into it, one of silver and the other of gold. Its water will be sweeter than honey, colder than ice, and whiter than milk. Whoever drinks its water once will not feel thirsty until he enters Paradise, and its cups will be as numerous as the stars in the sky.