Al-Qadir's order of repentance for the Mu'tazila in Baghdad and Khurasan

In 408 AH the caliph al-Qadir billah proclaimed a repentance by the Mu'tazili jurists of Baghdad and put an end to their debates, in a striking doctrinal shift whose effect reached Khurasan and the rest of the East. ¹

Al-Qadir billah summoned the Mu'tazili jurists of the Hanafi school. They professed their return and disavowed Mu'tazilism. He forbade them to teach, to speak, or to debate Mu'tazilism, Rafd, or doctrines that contradicted the Sunna, and he took their signatures to that effect, with threats of punishment if they went against it. ¹

Yamin al-Dawla Mahmud ibn Sebuktigin complied with the order of the Commander of the Faithful in the provinces that he held on the caliph's behalf in Khurasan and Transoxiana. He killed, imprisoned and exiled those who opposed the Sunna, ordered them cursed from the pulpits of the Muslims, and drove them from their homes, and this became a practice in his realm. ¹