Some people can justify anything.
From Human Rights Watch: Qatar’s personal status law discriminates against women in marriage, divorce, child custody, and inheritance. The law provides that women can only marry if a male guardian approves of the marriage; men have a unilateral right to divorce while requiring women to apply to the courts for divorce on limited grounds; and a wife is responsible for looking after the household and obeying her husband. Under inheritance provisions, female siblings receive half the amount their brothers get.
The penal code does not criminalize domestic violence or marital rape
Sounds pretty sexist and barbaric to me.