Kashika

The Kāśikāvṛtti ("the commentary of [composed or used in] Kāśi, i.e. Varanasi") is a commentary on Pāṇini, attributed to Jayāditya and Vāmana, composed in c. the 7th century. It is considered one of the great grammar texts of Sanskrit after Pāṇini's Aṣṭādhyāyī (4th century BCE), Kātyāyana's Vārtikās (6th-4th century BCE-unclear), Patanjali's Mahabhasya (2nd century BCE), and Bhartṛhari's Vākyapadīya (6th century CE).