 as for everything that the king can do alone without his confidants and his entourage it is one of his morals that he does not share it with anyone. this is also what was reported about anushirwan and muawiyah bin abi sufyan. some scholars report something similar to this about alrashid.
فأما كل ما أمكن الملك أن ينفرد به دون خاصته وحامته؛ فمن أخلاقه أن لا يشارك أحدا فيه. وكذا حكي عن أنوشروان ومعاوية بن أبي سفيان. وبعض أهل العلم يحكي عن الرشيد ما يقرب من هذا.