Commentary for Berakhot 44:3
אמר אביי עזרא תקן לבריא המרגיל מ' סאה ובריא לאונסו ט' קבין ואתו אמוראי ופליגי בחולה מר סבר חולה המרגיל כבריא המרגיל וחולה לאונסו כבריא לאונסו ומר סבר חולה המרגיל כבריא לאונסו וחולה לאונסו פטור מכלום
Abbai said : Ezra ordained forty Saot for a healthy person whose emission was voluntary and nine Kabs for a healthy person when it was involuntary. Then came the Amoraim and differed as to a person indelicate health. Some were of the opinion that the delicate person whose emission was voluntary is like the healthy man whose emission was voluntary [and requires forty Saot], and the delicate person when it was involuntary like the healthy man when it was involuntary [and requires nine Kabs]. Others, however, were of opinion that the delicate person whose emission was voluntary is like a healthy man whose emission was involuntary [and requires nine Kabs], and the delicate person when it was involuntary is exempt therefrom altogether.