Historical care matters. “5,000-year-old technology” is a slogan, not a substitute for tracing how concepts actually appear in texts over time.
Foundations
Charaka Samhita
Foundational concepts of Tridosha, constitution, examination, physiology, and disease process. It should not be presented as containing the complete later system of Nadi Pariksha.
Foundations
Sushruta Samhita
A foundational source for Ayurvedic anatomy, physiology, diagnosis, examination, and surgery — again, not a simple attribution of the fully developed later pulse system.
c. 13th century
Sharangadhara Samhita
An important early systematic description of Nadi examination.
c. 16th century
Bhavaprakasha
Further development of pulse interpretation within a later Ayurvedic compendium.
Later medieval / early modern
Yogaratnakara
An Ayurvedic compilation with expanded pulse descriptions within clinical examination.
Later tradition
Basavarajiyam / Basavarajeeyam
Additional descriptions of pulse characteristics and vessel qualities.
Secondary source
Traditional practices and recent advances in Nadi Pariksha: A comprehensive review.
Kumar PVG, Deshpande S, Nagendra HR. Journal of Ayurveda and Integrative Medicine. 2019;10(4):308–315. PMID: 30100236. DOI: 10.1016/j.jaim.2017.10.007.