大方廣佛華嚴經隨疏演義鈔 17.61

17.61

疏「若依生物之信」下，第二正申去取。於中文二：先總取三義、後以宗揀定中，文並可知。言「敵對外道阿優」者，《百論》云「外道立阿優為吉。」《智論》云「梵王昔有七十二字以訓於世，教化眾生。後時眾生福德轉薄，梵王因茲吞噉却七十字，在口兩角各留一字，是其阿優，亦云阿嘔，梵語輕重耳。」餘可知。

Regarding the Commentary's text from "If based on producing faith in living beings" onwards: this is the second [part], which directly sets forth what to adopt and reject. Within this text there are two parts: first, generally adopting the three meanings; second, definitively selecting in terms of the doctrinal tradition. In both, the text is understandable. As for the statement "directly opposing the non-Buddhist a-u (oṃ)": the Śataśāstra says: "Non-Buddhists establish a-u as auspicious." The Mahāprajñāpāramitopadeśa says: "In antiquity Brahmā had seventy-two letters to instruct the world and transform living beings. In later times, as the merit of living beings grew increasingly diminished, Brahmā thereupon swallowed back seventy letters, leaving one letter at each corner of his mouth: these were 'a' and 'u', also said as 'a-ou', being merely the light and heavy forms of Sanskrit pronunciation." The rest is understandable.