مختصر صحيح بخاري
Mukhtasar Sahih Bukhari
Book of Marriage
Spouses being of the same religion
Narrated by Sayyiduna Abu Huraira (may Allah be pleased with him) from the Noble Prophet (peace and blessings of Allah be upon him): The Prophet (peace be upon him) said: "A woman is married for four reasons: (1) for her wealth, (2) for her lineage, (3) for her beauty, (4) for her religiousness. So you should marry the religious one, otherwise your hands will be dust-covered."