The ruling on breastfeeding whose method and number of times are unknown

Question: I married my cousin’s daughter last year. My problem, and hers, is this: my mother, who is my breastfeeding mother—and who nursed me along with her older son—testified that she also nursed my wife along with her son. However, she did not specify the method of breastfeeding or the number of times. What should I do in this situation?

Answer: Your wife is not forbidden to you until the woman mentioned, who nursed you, testifies that she nursed her five times or more, provided that the nursing took place within the first two years. In addition, it is necessary to establish that the milk was from her.
We advise you to bring her before the honorable judge of your country so that he may question her about the testimony she possesses and so that the necessary requirements for this matter may be completed. May Allah guide them all.