Would it be possible, to make a rue tea, with a few grams of rue, reduce it, and poor the liquid on cannabis.

After evaporation, would maoi effects be felt by smoking the cannabis?

Yeah, that will work. I would, however, extract the harmala-alkaloids better than just in a tea. If you were to extract the alkaloids properly, dilute them and then poor that liquid on your cannabis, you would have to smoke less and the smoke would taste better.

too bad I quit cannabis, i may just have to make an exception just this once...