The Meaning of the Phrase: "The Decree Is Entrusted to the Tongue" and the Story of Yusuf (peace be upon him)

Question:
Shaykh Salih says: The questioner asked: Al-Mawardi (may Allah have mercy on him) said, "The decree is entrusted to the tongue." Is this phrase correct? Because he mentioned that Yusuf (peace and blessings be upon him), when he supplicated to his Lord that prison was more beloved to him than what they were calling him to, remained in prison for several years.

Answer:
The decree is predestined; the decree is predestined and written in the Preserved Tablet. What Allah has decreed and written in the Preserved Tablet must occur. And Yusuf (peace be upon him) did not sin through his supplication; he supplicated to his Lord to avert from him the schemes of the women, so He averted it from him. He preferred prison over obeying the wife of the Aziz, who lured him to himself, so that his innocence (peace and blessings be upon him) would become apparent. And his innocence did become apparent, until . Yes.