JhānavibhaṅgaSuttantabhājanīya

Abhidhammapiṭaka · Vibhaṅga · Vol. 35 · Section 639

[639] "Not restless (anuddhato)": because that restlessness and remorse (uddhacca-kukkucca) has been given up, vomited up, released, abandoned, relinquished, abandoned and relinquished — therefore he is called "not restless."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.