一切經音義 2.254

2.254

不懱（眠結反說文輕㑥也從心蔑聲經中單作蔑誤也非本字蔑音同上㑥音易）。

不懱 (Pronounced 眠 + 結 fanqie. The Shuowen says: 'To slight, to disdain; it derives from 心 with 蔑 as phonetic.' In the sūtra it is written simply as 蔑, which is an error and not the original character. 蔑 has the same pronunciation as above; 㑥 is pronounced 易).