Avyayaprakaraṇa is one of the Prakaraṇas (chapters) present in Siddhāntkoumudī dealing with words that are categorized as Avyaya Padas (words). It is writtten by 17th century Sanskrit grammarian and commentator Bhaṭṭojī Dīkṣita, who lived in Maharashtra. Siddhāntkoumudī is based on restructuring of Pāṇini's Aṣṭādhyāyī sūtras based on Prakṛiyā (formulation) of words by selecting specific sūtras from various places from Pāṇini's text and making Prakaraṇas out of them and also giving explanations. This makes it easier for the learners to study the sūtras who otherwise had to do this Prakṛiyā process mentally after throughly studying and understanding all sūtras notably by reading the Patañjali's 'Mahābhāṣya'. Prauḍhamanoramā is a commentary on Siddhāntkoumudī by Bhaṭṭojī Dīkṣita himself. Hari Dīkṣita his grandson has done a super-commentary on this text known as 'Śabdaratna' also present in the text. This Ms. is written in 10–14 lines per folio. Mistakes are covered with yellow or blacked out. Some corrections and additions in the margins. Significant syllables and words highlighted in red throughout the text.
Avyayaprakaraṇa Vaiyākaraṇa siddhāntkaumudī
Sanskrit Grammar, Vyākaranaśāstra, Prakaraṇa text on Pāṇinian Grammar, Commentary and Sub-commentary on Pāṇinian Grammar
अव्ययप्रकरण सिद्धान्तकौमुदी; अव्ययप्रकरण वैयाकरण सिद्धान्तकौमुदी