Although the rule announced is based upon an owner's sale to a purchaser produced by the broker, we see no reason why such rule should not apply equally to a situation where the owner sells, through another agent, to the same purchaser with whom the first broker had been negotiating. To the same general effect see Braniff v. Buttram et al., 203 Okla. 480, 223 P.2d 116. By reason of what has been said above it is unnecessary to review the argument directed at certain of the trial court's instructions, other than to observe that the instructions given fairly defined the law applicable to the issues presented.