sutra
/ˈsuːtrə/noun
1- a rule or aphorism in Sanskrit literature, or a set of these on grammar or Hindu law or philosophy（梵语文学中的）格言警句; 梵语语法; 印度法律（或哲学）。参见KAMA SUTRA.
1.1
- a Buddhist or Jainist scripture佛教（或耆那教）经文。
词源
from Sanskrit sūtra 'thread, rule', from siv 'sew'.