Explanation:

- Panini: An ancient scholar, known for his work on Sanskrit grammar. His notable work is "Ashtadhyayi," a foundational text in linguistics. He did not write "Tarikh-i Dilkusha."

- Bhimsen: He is indeed the author of "Tarikh-i Dilkusha." This book is an important historical account detailing the Deccan during Aurangzeb's reign.

- Sushruta: An ancient Indian physician, hailed as the “Father of Surgery.” He is known for writing "Sushruta Samhita," a treatise on Ayurveda and surgery.

- Charaka: A prominent figure in ancient Indian medicine. He wrote the "Charaka Samhita," another significant text in Ayurveda.