Much stress has been laid before this Court on the fact that the plaintiff3respondents have not proved signatures of the appellant on the agreement to sell in question by calling an expert witness. According to learned counsel for the appellant, once she had denied her signatures, it was incumbent upon the respondents to prove the same by calling an expert witness. However, it may be noticed at this stage that Gulab Singh, who is husband of the appellant, had appeared in the Court as PW38 and had admitted that the appellant has thumb marked the documents in question in his presence. Neither it is the pleaded case of the appellant that her husband has colluded with the plaintiff3respondents in any manner nor there is any evidence to show such collusiveness. In view of the aforesaid facts, which could not be disputed before this Court, no exception can be taken to the findings recorded by the courts below against the appellant.