
Nair ceremonies and customs

There are numerous ceremonies and customs adopted by the Nair caste, who are prominent in the South Indian state of Kerala.
Ceremonial Art forms.
Kalarippayattu.
The Kalarippayattu training was undergone by every youth of Nair community. However it was not the sole prerogative of only the Nairs, for there were some Muslims, Christians, Ezhavas, and even Brahmins who practiced and mastered the techniques of Kalarippayattu.
Kathakali.
Kathakali is a dance-drama which portrays scenes from Hindu epics or stories. It is a classical dance form of Kerala, demanding long years of training. Believed to have evolved from "Ramanattam", another classical art form composed by Kottarakkara Thampuran, Kathakali incorporates the techniques of some of the major ritual art forms of Kerala.The dance drama was historically performed exclusively by Nairs and had always traditionally been associated with them. Nair rulers and chiefs had patronized the art and Kathakali had foundations in Nair military training and religious customs.
Velakali.
Velakali (വേലകളി) is a ritualistic martial art form performed by Nair men in some temples of southern Kerala. It originated in Ambalappuzha where Mathoor Panicker, chief of the Chempakasserri army, to boost the martial spirit of the people. Dancers wear colourful and attractive costumes similar to that of the Nair soldiers of the olden days. The dancers carry a painted shield in the left hand and a stick (Churikakkol) in their right hand and the performance resembles the actions in a battle. Percussion instruments like Thakil, Shudhamaddalam, Ilathalam, Kombu, and Kuzhal are used.
Earlier customs and traditions.
Marumakkathayam and Tharavadu.
Marumakkathayam is matriliny. Tharavad is subclan-household, which is matrilineal for Nairs. Tharavad was headed by eldest male member of the family (known as Karanavan) while other male members were known as Anandravan.
Sambandham (an earlier form of marriage) and related customs.
In the past (before 1937 in Cochin, before 1928 in Travancore and before 1933 in Malabar) Nairs had three major marriage/rite of passage ceremonies. Kettu Kalyanam (mock marriage ceremony/ auspicious ceremony), Thirandu Kalyanam (menstrual ceremony) and Gunadosha-Sambandham/Pudamuri/Pudavakoda (cloth-giving ceremony, actual union).
Kettu Kalyanam (mock marriage ceremony).
Elaborate auspicious ceremony that resembles real marriage of patrilineal castes. Tali-tying rite. Regarded as relic of a past (before ~1200) when Nairs too were patrilineal. 
Sambandham/Podamuri/Pudava Koda/Mundukoda (lit.cloth-giving. Marriage alliance, where divorce is permitted, unlike in Vedic Vivaha).
The "Sambandham" ritual was less religious than the "thaali" and puberty rites, and literally means "alliance" or "relationship". It was a form of marriage alliance between men and women following "marumakkathayam". The ritual was comparatively simple. It involves the groom, of same or higher subcaste/caste of bride, whose horoscope has been checked and matched with that of the bride, giving a piece of cloth (Pudava) to the bride in front of a lit lamp (symbolizing Agni) and eight auspicious objects (Ashtamangalyam), with witness of bride's kin and groom's friends/kin. Sambandham was not necessarily a permanent arrangement (unlike Vedic Vivaha of Brahmins, and many other castes, where concept of divorce did not exist), eventhough in many or most cases it lasted throughout lifetime However it was this innate weakness, ie, divorce being permitted, of "sambandham" that helped maintaining the integrity of the matrilineal "tharavadu".
"Sambandham" can denote hypergamy between Nair women and Namboothiri men as well. Among the Namboodiris only the eldest son was permitted to marry (Veli, or Vedic Vivaha) within own caste (primogeniture) to maintain the integrity of ancestral property. The remaining younger sons contracted Sambandhams with Kshatriya or Samantan princesses, Ambalavasi or Nair ladies. Since the offspring of these alliances were, as per Marumakkathayam, legally members of their mothers castes and families, the Namboodiri father would not be legally obliged to provide for them, but in most cases would give a part of self acquired property. This was known as Putravakasham (son's right) or Acchankoduthathu (father's gift). For the matrilineal castes in turn Sambandhams with Brahmins were a matter of prestige and social status. Thus Sambandham was in both ways a gain to the castes involved. Namboodiri-Kshatriya and Namboodiri-Nair Sambandhams may also be considered morganatic marriages for while the husband was of higher social status and the mother of relatively lower status, the children were still considered legitimate although they did not inherit the titles or wealth of their fathers. However, Marxist and feminist anthropologist, Kathleen Gough argues that there is little evidence that polyandry was rarely practiced in few areas, before 1800, while famous Kerala historian and anthropologist K. M. Panikkar has stated that "Nairs have no tradition of polyandry" in his 1918 paper about Nairs published by Royal anthropological institute. 
In case of "sambandham" with Namboothiri men, the system benefited both the Namboothiri Brahmins as well as matrilineal castes like the Nairs for two reasons. First, Namboothiri Brahmins had institutionalized primogeniture, permitting only the eldest son to marry within the caste. Younger sons (also called "aphans") in Namboothiri families were expected to establish "sambandham" with Nair, "Ambalavasi" (temple service castes),royal Samantan or Kshatriya women. This allowed Nambudiri Brahmins to have more influence through close blood-relations with the ruling elite and martial castes. Secondly, Nair families encouraged the "sambandham" arrangement with Namboothiri men, who were not involved in warfare and provided stable alliances, and also increasing their "tharavadu" and caste status.