金剛經纂要刊定記 2.187

2.187

疏異邪等者。阿者言無，憂者曰有。外道意云：萬法雖異不出有無，置之經初以之為吉。以初吉故，今中後亦吉。今則不爾，故云異邪。

Regarding the Commentary's 'distinguishing from heterodoxy' and so forth: 'A' means non-existence; 'U' means existence. The non-Buddhists mean: 'Although the ten thousand dharmas differ, they do not go beyond existence and non-existence; placing these at the beginning of a scripture makes it auspicious. Because the beginning is auspicious, the middle and end will now also be auspicious.' Here it is not like that; therefore it says 'distinguishing from heterodoxy.'