I found this definition of comity:

A rule of cortesy by which one court defers to the concomitant jurisdiction of another. "Judicial comity is not a rule of law, but one of practical convenience and expediency."

Law Dictionary - Steven H. Gifis - BARRON

As examples:

Courts, for reasons of law, comity and convenience, should not entertain suits unless the available administrative remedies have first been resorted to and the ...
www.supremecourt.gov.ph/2002/nov2002/139492.htm

Furthermore, reasons of law, comity and convenience prevent the courts from entertaining cases proper for determination by administrative agencies
http://www.supremecourt.gov.ph/2001/may2001/106028.htm

Cheers,

V