Dictionary Definition :
Definition[1]
:
劫初,梵天王得七十二字來化世間,世間皆不信,故吞七十字,唯留二字於口之左右,即阿與漚。外道之書,以此二字安於卷首,阿者無,漚者有,謂一切諸法不出有無二義,故安之以表吉相。〔百論〕
Source
:
佛光電子大辭典
Page
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p88
Definition[2]
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Brahma obtained seventy-two words with which to save the world, but failing he swallowed seventy, leaving one at each side of his mouth 阿 and 漚 , i.e. 無 and 有 things are, things are not, being and non-being.
Source
:
A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous
Definition[3]
:
(雜語)百論曰:劫初梵天王得七十二字,來化世間,世間皆不信,故吞七十字,唯二字留著於口之左右,即阿與漚也。故外道書之首,皆安此二字。阿者無,漚者有。謂一切諸法,不出有無之義,故安於經之首以表吉相。
Source
:
丁福保《佛學大辭典》