धातुसूत्रगणोणादिवाक्यलिङ्गानुशासनम् ।
आगमप्रत्ययादेशा उपदेशाः प्रकीर्तिताः ॥
dhātu-sūtra-gaṇoṇādi-vākya-liṅgānuśāsanam |
āgama-pratyayādeśā upadeśāḥ prakīrtitāḥ ||
(Unkown source; cited in the Amṛta-ṭīkā on Hari-nāmāmṛta-vyākaraṇa: 2.5)
“Dhātus, sūtras, gaṇas [i.e., groups of words that follow the same rules], uṇādi-sūtras, vākyas [i.e., Kātyāyana’s vārttikas], Liṅgānuśāsana [i.e., a work dealing with the rules of gender attributed to Pāṇini], āgamas, pratyayas, and ādeśas are called upadeśas.”