Hi Lal,
please see the post Kanha (Dark) and Sukka (Bright) Kamma and Kammakkhaya,
#11:
“…A purified mind of an Arahant will not have either sōbhana or asōbhana cetasika. The “mental hooks” are due to those cetasika….”
Do the sobhana cetasika really cease? I thought the citta will be sobhana, but only functional.