JhānavibhaṅgaSuttantabhājanīya

Abhidhammapiṭaka · Vibhaṅga · Vol. 35 · Section 696

[696] "Consciousness is infinite (anantaṃ viññāṇaṃ)": he attends to that very space (ākāsa) touched by consciousness; he pervades it as infinite. Therefore it is called "consciousness is infinite."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.