Why did the Mu'tazilah not declare the doer of a major sin a disbeliever in this world?

Question : The Khawarij and the Mu'tazilah agreed that his ultimate destination is the Fire, where he will remain forever, but they differed in that the Khawarij say he is a disbeliever in this world, while the Mu'tazilah say he is in an intermediate position between two positions, even though his ultimate destination is the Fire. Why did they oppose them? Even though the ultimate destination is the same destination,

Answer : because all of them took the texts of warning as their basis. The Khawarij took the texts of warning, and so did the Mu'tazilah, but regarding this world, they said, "We cannot permit the blood of the open sinner. It is not permissible to spill his blood, and it is not permissible for us to abandon praying over him." Therefore, they refrained. The refraining of the Mu'tazilah from declaring him a disbeliever in this world is akin to being accommodating, or conforming to the people, because if they had said, "Permit the blood and wealth of people if they commit a major sin," all the people would have opposed them.