官不容针 (官不容針) guān bù róng zhēn

guān bù róng zhēn set phrase officially, not even a needle is admitted
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')

Also contained in

官不容针私通车马