The eight forms of marriage (history)
The Manusmṛti and other Dharmaśāstras list eight forms of marriage known in ancient society: Brāhma (the bride given to a learned groom), Daiva (given to a priest at a sacrifice), Ārṣa (with a token gift of cattle), Prājāpatya (given with the charge to practise dharma together), Āsura (by payment to the bride's family), Gāndharva (by mutual love), Rākṣasa (by abduction) and Paiśāca (by deceit).
The texts themselves approved the first four and condemned the last ones. This is a historical classification; modern Hindu marriage rests on the free consent of both partners and is governed by law.
Manusmṛti, ch. 3