To proceed: I have understood your question about the points on which the Jahmiyyah have repeatedly erred concerning the attributes of the Mighty Lord—His greatness eludes description and estimation; tongues grow weary of explicating His attributes, and minds fall short of comprehending His reality. When intellects found no passageway to Him, they turned back humbled and exhausted. People have only been commanded to observe and reflect upon what He has created. The question “How?” is asked only of one who did not exist and then came to be; as for the One who undergoes no change, has always been, and has no equal, none knows how He is except He Himself.
The evidence of the intellects’ inability to grasp His attribute lies in their failure to grasp the attribute of the smallest of His creatures—so minute that the eye scarcely perceives it, appearing and disappearing, possessing no discernible sight or hearing. Recognize, then, the sufficiency of being spared the burden of describing what the Lord has not described of Himself, by your incapacity to know the measure of what He has described. As for anyone who, out of excessive speculation and self-imposed burden, denies what the Lord has affirmed of Himself, the devils have led him astray upon the earth, bewildered; Satan continues to whisper to him until he rejects the Almighty’s words: “Faces on that Day will be radiant, looking toward their Lord” (Q 75:22–23), claiming, “He will not be seen on the Day of Resurrection….”
He then set forth a lengthy discourse affirming the attributes, conveying them as they have come, and refraining from further intrusion.
It is related that he once examined a treatise in which some authors negated the attributes, whereupon he declared, “This discourse is demolition without construction and an attribution devoid of meaning.”
ʿAbd al-Malik ibn al-Majishun the jurist reported that al-Mahdi rewarded his father with ten thousand dinars.
Ahmad ibn Kamil said: He (ʿAbd al-ʿAziz) left behind several authored works, which Ibn Wahb transmitted from him.