Elaborating on this issue, we’d like to cite the fatwa issued by Sheikh M. S. Al-Munajjid, a prominent Saudi Muslim lecturer and author. He states:
“There is no objection whatsoever in the Islamic religion for a man to marry any of his relatives except those forbidden for marriage whom Allah mentioned in surat an-Nisaa’ (4: 23) Thus, when Allah mentioned for us the relatives to whom marriage is forbidden, we then come to know that there is no objection for the remainder of the family relations.