The Aşāirah (Asharis) are disbelievers.
The Shaykh of al-’Imam al-Bukhariyy and al-’Imam Muslim: al-’Imam al-Muhaddith Abu Jafar Aḥmad ibn Sinan al-Wasiṭiyy al-Qaṭṭan (d. 259H), said:
“Whoever claims that the Qur’an is two things, or that the Qur’an is a hikayah (a telling), then – by Allah, the One besides Whom there is nothing that has the right to be worshipped – he is a Zindiq and a disbeliever in Allah. This Qur’an is the Qur’an that Allāh sent down upon the tongue of Jibril, upon Muḥammad. It is not altered nor changed, and falsehood cannot reach it from the front nor the back. It is Revelation from the All-Wise, the Owner of all Praise, as Allāh said:
“Say: “If mankind and the Jinn gathered to produce the like of this Qur’an, they could not produce the like of it…” [al-’Isra, 17 Verse 88]
The Qur’an is the Speech of Allah. From Him it began and to Him it will return. Nothing of Allah (تعالى) is created, nor of His Attributes, nor of His Names, nor of His Knowledge.” [Al-Hafidh Aḍ-Daya’ al-Maqdisiyy Muḥammad b. Abd al-Wāḥid (d 643H), ed. Iịtiā al-Qur’an bi-Awdih ila r-Raḥīm ar-Raḥmān (Maktabať ar-Rushd, 1st Edition, 1409H, ar-Riyaḍ, thq. Abdullāh al-Juday), p. 31–32]
The Asharis admit that they are Jahmiyya
In the biography of Al-Mizzi (died. 742 Hijri):
“Al-Mizzi wanted to read a part from Al-Bukhari’s book Khalq Af’al Al-‘ibad, because there is a part about refuting the jahmiyya, then some people got angry and said: “We are the ones who are meant by this.” When this news reached the shafii (he actually was an ashari, many asharis falsely attribute to the madhhab of al-shafii rahimahullah) judge, he ordered Al-Mizzi to be locked up in prison.”
Why they are Mushrikin
Uthman bin Said Al-Darimi said: Who doesn’t know that his God is on the Throne above His heavens, the he worships other than Allah, and he intented to worship some God on earth. And who worships a God on earth is like the one who worships an idol, because Al-Rahmaan is on the Throne and the idols are on earth. Like Allah said about Jibril: [Who is] possessed of power and a high status at (Allah) the Owner of the Throne. Obeyed there [in the heavens] and trustworthy. (at-Takwir 20-21) So in this saying there is a daleel for him being separate and the boundary, because he said: “there”, not here in the horse stables and the toilets like they claim. (Naqd Uthman bin Sa’ied Al-Darimi 3ala Al-Mirisi Al-Jahmi Al-’anied 1/489)
Al-Harawi has a book ‘Takfir al-Jahmiyyah’ and he meant by them the Asharis, and he made a chapter in his book ‘Dham al-Kalaam’ in which he quotes the eight category, wherein Asharis rose and likewise after it the ninth category mentioning in it a number of scholars who’ve attacked the Asharis and declared them as Kuffar. He also mentioned that al-Ashari never used to pray and all refuge in Allah is sought.
And he said in a chapter mentioning the sayings of al-Ashari: ‘Indeed I have filled the book ‘Takfir al-Jahmiyyah’ with the sayings of the scholars of Islam and the Ijma of the Muslims in taking them outside the fold of Islam. Until he said ‘and it has been known amongst the Muslims that their Head Ali bin Ismae’eel al-Ashari used to never make Ghusl, Wudhu or prayer.’ (Dham al-Kalam p. 608)
Al-Harawi (481H) said in Dham al-Kalam p. 552 :
“I’ve seen Yahya bin Ammar upon his minbar innumerable times making takfir of them (Asharis), cursing them and testifying to the Zandaqah (heresy) of Abu Hasan al-Ashari, and as such have I seen Muhammad bin Ibrahim and our Shuyookh.”
Imaam al-Bukhaaree narrates from]Muhammad bin Yusuf al-Firyaabee (d. 212H) [that he] said:
Whoever says Allah is not above His Throne is a kafir and whoever claims that Allah did not speak to Moses is a kafir.
Nu’aym ibn Hammad said: “Anyone who denies anything from the attributes that Allah has described himself with, is a kafir.”