Abu al-Hasan Alee ad-Daraqutnee (d. 385H), brings in his "Kitaab us-Sifaat, with his chain of narration:

Muhammad bin Makhlad narrated to us: Muhammad bin Muhammad bin Umar bin al-Hakam Abu al-Hasan al-Ataa said: I heard Muhammad bin Mus'ab al-Aabid saying:

Whoever claims that you do not speak and will not be seen in the Hereafter, then He is a kaafir (disbeliever) in your Face, and he does not know you. I bear witness that you are above the Throne, above the seventh heaven and it is not as your enemies, the zanaadiqah (heretics) say.

Muhammad bin Mus'ab was one of the pious worshipers and reciters, he was praised by Imaam Ahmad bin Hanbal who described him with being upon the Sunnah, and Abu al-Hasan al-Attaar narrated from him. He was thiqah, and a reciter of the Book of Allaah. He died in 228H, refer to Taareekh Bagdhaad (3/279) of al-Khateeb. And al-Khateeb al-Baghdaadee also reported this athar with the same isnaad in Tareekh Baghdaad (3/280). And it is also found in as-Sunnah of Abdullaah bin Imaam Ahmad (1/182).

Source: "Kitaab us-Sifaat" of ad-Daraqutnee (tahqeeq Alee Naasir al-Faqeehee), no. 64, p 72.