Laghustutih (vrittisameta) 40

40

and according to the rule stated by the teacher: “Now, having pervaded the universe, it is designated as ‘ha’,” the word “ahaṃ,” whose form is composed of the letters ‘a’ and ‘ha’ having attained the state of a dvandva compound, neuter gender, and singular number, [and which is] renowned as the imperishable, Parā, and the great mantra, is signified by the word “speech” (vāc), because of the Upaniṣadic text: “It knew itself alone: ‘I am Brahman.’”