Some muslims speak against cousin marriage.
They need to be extremely careful. Cousin marriage is mentioned in the Quran. Moreover, the prophet pbuh married two of his daughters to their cousins, first cousins and the prophet pbuh said The meaning of the Hadith is
Now what is Kufw? It means same or similar. If you are a muslim man, my advice to you is this marry your cousin if she’s upon Quran and Sunnah. Upon the understanding of the companions, if not a cousin, someone who is a relative to you or from your own tribe or from a similar tribe. Why? Because the other two daughters of the prophet pbuh
He married them within his own tribe. As a muslim man, you should be following Islam in every single thing. To learn more about finding the right girl for you, read Chapter 32 of the 100 Islamic Principles for Life Seek the best for your sperm. The book is available worldwide on Amazon and the e-book and audio book on the website Islamic Principles dot com.
Islamic Principles Website 