A woman’s testimony counts half of a man’s testimony. The Quran in Sura 2:282 says:
And let two men from among you bear witness to all such documents [contracts of loans without interest]. But if two men be not available, there should be one man and two women to bear witness so that if one of the women forgets (anything), the other may remind her. (Maududi, vol. 1, p. 205).