Pious fraud
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A subterfuge or evasion considered morally justifiable on account of the ends sought to be promoted ; particularly applied to an evasion or disregard of the laws in the interests of religion or religious institutions, such as circumventing the statutes of mortmain.
Defined under Fraud in Black's Law Dictionary.