The Hadīth Qudsi is what has been transmitted to us as Isolated (Ahaad) reports about him  with its isnād going back to his Lord . It is His  speech for it is attributed to Him  which is present in the majority of cases. The attribution to Him  then is an attribution of origination because he is the one who spoke it first. It is attributed to the Prophet  because he is the one informing about Allah  which is contrary to the Qur’ān which is attributed to no one except to Him . So it is said:

And in the hadīth qudsi it is said:

The narrator of the hadīth qudsi has two characteristics, first is that he may say:

Secondly, he may say:

The difference between the Qur’ān and the hadīth Qudsi is that the wording and the meaning are from Allah  which has come via the clear revelation. As for the hadīth Qudsi, the wording is from the Messenger  and the meaning is from Allah through ilham (inspiration) or sleep. The Qur’ān's wording is a miracle revealed via the medium of Jibreel. The hadīth Qudsi is not a miracle and is without any medium. The difference between the Qur’ān, hadīth Qudsi and ahadīth which are not ahadith Qudsi is that the Qur’ān is the wording brough down by Jibreel to the Prophet .The hadīth Qudsi is the meaning of notification of Allah  through ilham (inspiration) or sleep. So the Prophet  informed people of it with his own words. As for the rest of the ahadīth they are like the hadīth Qudsi in that the meaning is from Allah and the wording is from the Messenger  but it is not attributed to Allah . The designation of the hadīth attributed to Allah  as the hadīth Qudsi is a terminological designation.