Kya hans kya bagla
Jaa ko nazar dhare
Je tis bhaave nanka
Kagon hans kare
Reference: Kalam Baba Farid, Dr Nazir Ahmad; Packages Limited; Page 61 ( view source )
English Translation
Who is a swan, and who is a crane, if God blesses him with His Glance of Grace? If it pleases Him, O Nanak, he changes a crow into a swan.
Translation: S. S. Khalsa