What is Bona Fides Non Patitur Ut Bis Idem Exigatur?

Legal Definition
Good faith does not allow us to demand twice the payment of the same thing. Dig. 50, 17, 57; Broom, Max. 338, note; Perine v. Dunn, 4 Johns. Ch. (N. Y.) 143.
-- Black's Law Dictionary
Legal Definition
Good faith does not suffer one to exact his price twice for the same thing. See 4 Johns. Ch. (N. T.) 143.
-- Ballentine's Law Dictionary