Short answer
Nikah is a lawful marriage contract through which a man and woman establish a family relationship with mutual rights, responsibilities, affection and mercy.
Islamic Guidance
What Islam teaches
The Qur'an describes marriage as a relationship in which spouses find tranquility and Allah places affection and mercy between them. Marriage is also a lawful means of building a family and protecting chastity.
Practical Guidance
What you can consider
When considering marriage, look beyond photographs and social status. Discuss faith, character, expectations, family responsibilities, finances, education, residence and future plans before making a decision.
Sources
Qur'an 30:21; Qur'an 24:32.