This term is used in Abh. S. for the citta, Tab. I, 72. This type of consciousness (the Buddha”s smile) is often implied in the suttas.
lit.”consciousness producing mirth” (smile), is found in the Abhidhammattha Sangaha as a name for the joyful mind-consciousness element (manovin~n~a^na-dha^tu, Tab. I. 72) arising as functional consciousness independent of karma (kiriya-citta), only in the Arahat. - (App.).