leaking problem

so today i just got an inspection and failed, i failed because there is a leak coming from either the oil pan or front diff and has gotten onto the exhaust, the liquid has a greenish tint to it and is all over the oil pan and diff itself, anyone have any ideas on what happened? and how to fix it?

if its green i would say its antifreeze

Check the water pump for leakage.
Antifreeze can drip down and look like it is coming from other locations also it will mix with grease and look a little like oil.

ill have to look