Kitāb al-Fuṣūṣ says:

Nothing remains save the One true to His promise, alone;
No eye beholds the Real’s existence once He is shown.

If they should enter the abode of misery, then even there
They taste a pleasure—a bliss of a different air—
A bliss like that of the everlasting Gardens; the affair is one,
Yet when unveiling occurs, a distinction is nonetheless known.

It is called “torment” only because its savor is sweet,
A mere husk that shields the kernel where their pleasures meet.

For this reason, one of our companions said to a follower of these people—when they stirred up an inquisition against Ahl al-Sunnah in order to defend those atheistic heretics—“May God make you taste that sweetness!” This doctrine has already been reported by the heresiographers, such as al-Ashʿarī in his Maqālāt, concerning a faction drawn from the common rabble of the godless whom they named