一切經音義 3.129

3.129

戍達羅（古曰首陀略不正也此姓之徒務於田業耕墾播植賦稅王臣多為民庶竝是農夫寡於學識四姓之中此居下等也）。

戍達羅 (Śūdra: Formerly written 首陀, which was an abbreviation and incorrect. People of this caste apply themselves to agricultural labor: tilling, sowing, planting, and paying taxes to the king's ministers. Most of them are common subjects and farming folk, sparse in learning and knowledge. Among the four castes, this occupies the lowest rank).