This opinion of Ibn Mahdi is shared by many among the pious predecessors.
Wahab b. Jareer said: "Beware of the opinions of Jahm's followers, for they try to convince people that there is nothing above the heavens. Their statements are only from Iblees's revelation, and it is only infidelity".
The Standpoint of the Four Renowned Imams
Imam Abu Hanifah
Abu Muti' Al-Balkhi reported:"I asked Imam Abu Hanifah about a person who says, 'I do not know whether my Rubb is, above the heavens or on earth?' Abu Hanifah, may Allah grant him His mercy, said: 'A person who makes such a statement becomes an apostate because Allah, the Exalted says, 'The Merciful has ascended above the 'Arsh, and the 'Arsh of Allah is above His heavens'. I further asked Abu Hanifah, 'What if such a person admits, Allah is above His 'Arsh, but exclaims, I do not know whether His 'Arsh is above the heavens or on earth'. Abu Hanifah responded: 'If he denies that the 'Arsh is above the heavens, he is an apostate."
If the person apostatizes by saying that he did not know where is the 'Arsh of Allah, then by right a person who denies the Loftiness of Allah altogether is definitely worse than an apostate.
Abdullah bin Nafi' reported: Malik bin Anas said: 'Allah
is above the heavens, but His knowledge encompasses everything. Nothing escapes His knowledge.'
Imam ash-Shafi'ee said:"The creed which I hold is the same creed the Muslims before me were holding, namely, the Testimony of Faith: "There is no god worthy of being worshipped except Allah, that Muhammed is the Messenger of Allah, and that Allah is above His 'Arsh, above the heavens. He descends to the lowest heaven whenever He wishes."
Imam ibn Khuzaimah, a Shafi'ite himself, said: "Whoever disacknowledges that Allah is above His 'Arsh, above His seven heavens, and that He is separated from His creatures, is a Kafir, (unbeliever). Such person must be ordered to repent and disavow his belief, or else he must be beheaded and thrown on a garbage dump so that neither Ahlul-Qiblah nor Ahludth-dthimmah be annoyed by the foul odor of his carcass."
Abu Bakr Muhammad at-Tamimi, a Shafi'ite imam of Naisaboor, said:"I do not pray behind a person who denies the attributes of Allah and does not recognize that Allah is above His 'Arsh."
He was asked: "Is Allah above His 'Arsh, above the seventh heaven, separate from His creatures, and is His knowledge and power encompassing everything everywhere? He replied: 'Certainly, He is above His 'Arsh and nothing escapes His knowledge."
All of the above show that the entire Muslim ummah, in the past and present, is in unison regarding the belief in the Loftiness and Supremacy of Allah, the Exalted.
Adherents of certain deviant sects promote a false belief that Allah is omnipresent Who inheres in His creation. Rational arguments are deadly available to refute the blasphemy of the Jahmites and those who try to revive their belief today. To prove that Allah is above His 'Arsh, and above the seventh heaven in a manner that suits His Majesty, the Imam of Ahlus-Sunnah, Ahmad bin Hanbal, may Allah be pleased with him, refuted their belief more than one thousand years ago, when he wrote: "Where Allah is and Where He is not - An exposition of the denial of the Jahmites that Allah is above the 'Arsh."
We asked them "Why do you deny that Allah is above the 'Arsh when He has said: 'The Merciful has mounted the 'Arsh? And again,' 'Who in six days created the Heavens and the earth then ascended the 'Arsh,' They replied: "He is under the seven earths as He is on the 'Arsh; He is in heaven, on earth and in every place; there is no place where He is not, nor is He is one place to the exclusion of any other." And they quoted the verse: "And He is Ilaah in the heavens and He is Ilaah on the Earth!"
If you wish to prove the falsehood of the Jahmites who claim that Allah exists everywhere, not in one particular place, ask them, 'Is it not true that Allah was existent when there was nothing in existence?' The Jahmites' answer would be: "Certainly, there was nothing before Allah." Then ask them, "Did Allah create the creation within Himself or outside of Himself?" The Jahmites would be compelled to choose on of the following three answers:
If the Jahmites assert that Allah created the creation within Himself, they would then become apostate instantly by claiming that the Jinn, humans and Satans are all dwelling within Allah.
If the Jahmites assert that Allah created the creation outside Himself but dwelled in them afterwards, they would also become apostate instantly by claiming that Allah dwells in His creatures.