Did the Buddha teach receivers to be ungrateful?

I read the following on the internet: > If you truly understand the practice of generosity, then you'd never > have to look for outright expression of gratitude from the receivers. > The act does and will benefit you in this life and many future lives > to come. It's the donor who should express the gratitude for the > opportunity to build up his great kammic storehouse. Did the Buddha teach receivers to be ungrateful?