官不容针私通车马 (官不容針私通車馬) guān bù róng zhēn sī tōng chē mǎ

guān bù róng zhēn sī tōng chē mǎ set phrase Officially, not even a needle is admitted; privately, even a cart and horse can pass
Domain: Buddhism 佛教 , Subdomain: Chan 禅宗
Notes: (T 2003.193c; Cleary TF, and Cleary JC 2013, loc. 7329; FGDB '官不容針私通車馬')