The source texts

Arthashastra Kautilya Date disputed; the received text shows later redaction 3 subjects → Aryabhatiya Aryabhata 499 CE (established) 2 subjects → Ashtadhyayi Panini Mid-first millennium BCE (disputed) 2 subjects → Bhagavad Gita Vyasa, by tradition Dates disputed across all these texts 1 subject → Bhavaprakasha Nighantu Bhavamishra Sixteenth century CE (probable) 1 subject → Charaka Samhita Charaka Date disputed; the received text is a redaction of an older tradition 2 subjects → Krishi Parashara Parashara Date disputed; the tradition is older than the surviving text 2 subjects → Manasara The Manasara tradition Date disputed; the text is a compilation 2 subjects → Natya Shastra Bharata Muni Date disputed; the text is layered 2 subjects → Nyaya Sutra Gautama Date disputed; the sutras were added to over time 2 subjects → Patanjali’s Yoga Sutra Patanjali Date disputed 1 subject → Pingala’s Chandah-shastra Pingala Date disputed; placed in the last centuries BCE by most accounts 1 subject → Rasaratna Samuccaya The Rasashastra tradition Date disputed; the texts are compilations of a longer tradition 1 subject → Samkhya Karika Ishvarakrishna Date disputed; usually placed in the early centuries CE 1 subject → Surya Siddhanta Bhaskaracharya Twelfth century CE (established) 3 subjects → Vaisheshika Sutra 1 subject → Vrikshayurveda Surapala and Parashara Dates disputed for both texts 1 subject → Vrikshayurveda of Surapala Surapala Date disputed; usually placed in the early medieval period 1 subject → Yajnavalkya Smriti Yajnavalkya Date disputed 1 subject → Yoga Sutra Patanjali Date disputed 1 subject →