Cannabis itself does not contain any cocaine, BUT you don't know if the dealer had mixed any in either intentionally or unintentionally.
not a conclusive result
The conclusive answer is that the cannabis plant does not contain any cocaine or cocaine derivatives.
Does this help?
no not really
What more information do you need?
You asked a direct question that has a simple answer and a more complicated answer.
The simple answer is that cannabis does not contain cocaine.