It signifies that the dreamer will have a calm and safe life, he will do good works, he will do good works, he will earn commercial respect and plenty of money by making profitable investments. It is also sometimes referred to as a legacy that will come from an unexpected place to get rid of poverty.
It is a sign that the dreamer, who will not be able to control himself, will involuntarily commit a sin or take the sins of other people by talking backbiting. Sleeping on a white mattress means getting married, renewing marriage for single people, and sleeping on a black mattress means getting sick or getting the mercy of the right.