Have a perusal of it.

As per in the novel of Di Bawah Lindungan Ka’bah (which I haven’t read yet) before it, Van der Wijck is critical of Minang adat (traditions), such as the treatment of persons of mixed descent and the role of women, an issue shown through Hayati’s work to be an ideal wife despite Aziz mistreating her. Hamka found some traditions incompatible with the tenets of Islam and common sense and continued to criticise adat in his works – Wikipedia info