《笑林广记·贪吝部》
该人蹲在他人厕所，偶然放了一屁，带下粪来，于是十分懊悔，说： 何苦因小失大。 
其人不觉，偶撒一屁，带下粪来，乃大悔恨，曰： 何苦因小失大。 
The man squatted in someone else's toilet and accidentally farted, which brought down his feces. He was very regretful and said: Why should I lose the big because of the small.