Complex sentence: 's (12th century AD) commentary on Patañjali's also exerted much influence on the development of grammar, but more influential was the "Rupāvatāra" of Buddhist scholar Dharmakīrti which popularised simplified versions of Sanskrit grammar.
Split into simpler sentences: 's (12th century AD) commentary on Patañjali's also exerted much influence on the development of grammar. But more influential was the "Rupāvatāra" of Buddhist scholar Dharmakīrti which popularised simplified versions of Sanskrit grammar.