In an action by a broker against a vendor for his commissions, the contract between the vendor and purchaser being executed, and there being no allegation or proof that the broker induced the vendor to execute the contract, or any representation of bad faith, testimony as to the financial ability of the purchaser was inadmissible. Fleet v. Barker, 104 N. Y. S. 940, 120 App. Div. 455. Compare Dodson v. Milliken, 27 App. (D. C.) 500.