It means making preliminary preparations for a job. It indicates that the dreamer is planning to embark on a job that he believes will bring him great good and luck, and that he will take action to complete all formal and unofficial procedures to do this job. Heating water in a tube to take a bath in a dream means that a person will be bothered by the hardship he has to endure, and therefore he will come to the point of rebelling against this obligation. Heating water in a teapot, pot or pot to take a bath in a dream means being in trouble. Wanting to heat water to take a bath in a dream, but not being able to, means that troubles and problems continue.