Majjhima Nikaya 1:60
SUJATOĀkāsānañcāyatanaṁ ākāsānañcāyatanato sañjānāti;
They perceive the dimension of infinite space as the dimension of infinite space.
Ākāsānañcāyatanaṁ ākāsānañcāyatanato sañjānāti;
They perceive the dimension of infinite space as the dimension of infinite space.