一切經音義 27.85

27.85

優婆塞優婆夷（鄔波索迦鄔波斯迦鄔波近也迦事也索是男聲此云近事男斯是女聲此云近事女也）。

Upāsaka and upāsikā (youbaosai youbaoyi): (Upāsaka, upāsikā. Upa means 'close'; kā means 'to serve'. Sa is the masculine form, here translated as 'man who serves closely'. Si is the feminine form, here translated as 'woman who serves closely').