 In traditional Islamic law, a child under the age of two (besides many strict rules like that the suckling should be of such quantity that it could be said that the bones of the child were strengthened and the flesh allowed to grow.And if that cannot be ascertained, then if a child suckles for one full day and night, or if it suckles fifteen times to its fill, it will be sufficient), is that woman's child through a foster relationship (the woman is then called "milk mother").However, according to the Jurist Abu's-Su`ud (c.1490–1574), this only applies to sucklings under the age of two and a half years.