The historical evidence for caste hierarchy and discrimination in India

Historians do not rely on any single source to establish that birth-based social hierarchy existed in the Indian subcontinent. They compare normative legal texts, inscriptions, literature, foreign travellers' accounts, colonial administrative records, and first-person testimony from marginalised communities. Where independent sources converge, historians treat the underlying claim as well-supported; where only one type of source exists, they are more cautious.

This article is a first-pass draft. It has not yet been verified against primary sources in full and should not be treated as authoritative until reviewed.

Sanskrit legal and religious texts, including the Manusmriti and other Dharmashastra literature, prescribe a fourfold varna hierarchy and set out differentiated rules on who could study sacred texts, whom one could marry, and how punishments varied by social group. These texts are very strong evidence of what some elite authors and traditions believed society should look like. They are normative, not descriptive: they do not by themselves show how any specific village or region actually functioned, and India's regional diversity means practices differed considerably from the textual ideal.

Early Buddhist and Jain texts preserve arguments against birth-based claims to status. The Assalayana Sutta, part of the Pali Canon, stages a direct argument attributed to the Buddha that conduct, not birth, determines who is noble. These texts were transmitted orally for generations before being committed to writing, so historians treat them as evidence that hierarchy was a live and contested idea in this period, rather than as a contemporaneous social survey.

Temple inscriptions, land grants, and royal records from the medieval period record caste identities, hereditary occupations, and grants to specific caste groups. Inscriptions are contemporary documents rather than later recollections, which makes them strong evidence, but claims about what any specific inscription shows should cite the inscription by name, location, and date rather than referring to 'inscriptions' as an undifferentiated mass.

Foreign observers including Faxian (5th century), Xuanzang (7th century), and Al-Biruni (11th century) described social divisions they encountered. Al-Biruni's account is unusually systematic: he explicitly compares Indian hierarchy to social structures elsewhere. These accounts are independent of Indian sources, which gives them evidentiary value, but they are also geographically limited and shaped by outsiders' own frames of reference, so historians read them alongside, not instead of, Indian evidence.

Bhakti poets including Kabir, Ravidas, Chokhamela, and Basava repeatedly criticised untouchability, temple exclusion, and birth-based inequality in their own time. Some of what survives comes through later devotional compilations and hagiography rather than as neutral contemporary reportage, so historians treat this material as evidence of persistent critique and lived grievance rather than as a dispassionate social record.

Caste organisation differed substantially by region. Kerala is documented as having had unusually elaborate rules of ritual distance; Tamil Nadu's jati hierarchy often mattered more locally than the fourfold varna model; Gujarat's mercantile castes accumulated wealth despite not always ranking highest ritually; Punjab's Sikh tradition rejected caste in principle while caste identity persisted socially, including in marriage patterns that continue today. Historians generally avoid describing a single 'Indian caste system' for this reason.

British administrative and court records document segregated wells, housing, and temple access, and restrictions on education, in various regions. The colonial census and ethnographic surveys produced a large volume of documentation. This evidence should be used carefully: colonial officials sometimes had an interest in presenting Indian society as more rigidly and uniformly divided than it was, since this could be used to justify colonial administration. Historian Rosalind O'Hanlon's work argues that colonial institutions reshaped and standardised caste categories rather than inventing caste from nothing, a distinction that matters for how these records should be read.

B. R. Ambedkar's writings, including his account in Waiting for a Visa, describe personal experiences of being denied water, school segregation, and exclusion from temples. This is first-person testimony from someone who personally experienced discrimination, and it is corroborated by independent administrative and court records from the period, though it describes his own experience rather than a comprehensive national account by itself.

The 1932 Poona Pact, an agreement between Ambedkar and Mahatma Gandhi, resolved a dispute over whether the Depressed Classes would get separate electorates (Ambedkar's initial position) or reserved seats within the general electorate (the outcome). This is a specific, dated, documented turning point in how caste-based exclusion moved from a social practice toward a constitutional and electoral question, and it directly shaped the reservation system that followed.

Article 17 of the Constitution of India abolishes untouchability and forbids its practice in any form. The Protection of Civil Rights Act, 1955 and the Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989 are the statutory framework criminalising caste-based discrimination and violence. The National Commission for Scheduled Castes, a constitutional body, publishes annual reports documenting continuing cases of discrimination and atrocity.

That this legal and monitoring framework exists, and continues to record cases, is itself evidence that caste-based discrimination did not end with legal abolition in 1950, though the number and severity of documented cases is a separate question from the historical prevalence of caste discrimination before independence, and the two should not be conflated.

Sociological fieldwork, including work associated with M. N. Srinivas, documents that caste ranking in practice often extends through many layers rather than stopping at a simple upper-caste-versus-Dalit divide, and that some communities now classified together administratively as Scheduled Castes have historically maintained endogamy and social distance from one another in some regions. Ambedkar himself wrote critically about endogamy as a mechanism that helped the broader system persist.

This evidence does not mean all groups occupied equivalent positions or held comparable power. Access to land, education, and political authority was distributed very unequally, and a community that faced exclusion from higher-caste institutions could still maintain internal hierarchy of its own. Historians treat these as compatible facts, not a contradiction.

No single source, and no single region's evidence, shows that caste practice was uniform, static, or identical everywhere in the subcontinent across all periods. Historians today generally reject both the claim that caste was a perfectly rigid, unchanging system across all of India, and the claim that it was invented wholesale under colonial rule. The evidence instead supports a system that was real, influential, and durable, but regionally variable and subject to negotiation, resistance, and change over time.