روی هر یک مینگر میدار پاس
بوک گردی تو ز خدمت روشناس
بوک گردی تو ز خدمت روشناس
Look closely upon the face of each and keep watch, so that through devoted service to them you may come to know the face (of human devils from human saints).
Couplet 315 · The Story of the Greengrocer and the Parrot