Which one among the following pairs is not properly matched?

The pair Panini: Mahabhashya is incorrectly matched. Panini was a renowned ancient grammarian who authored the 'Ashtadhyayi', a foundational work on Sanskrit grammar [4]. The 'Mahabhashya' was actually written by Patanjali as a commentary on Panini's rules [2]. The other pairs are correctly matched: Megasthenes, a Greek ambassador to the Mauryan court, wrote 'Indica' [6]. Ashvaghosa, a prominent Buddhist philosopher and poet, authored the 'Buddhacharita', an epic poem on the life of the Buddha [1]. Vishakhadatta is the celebrated author of the historical Sanskrit play 'Mudrarakshasa', which deals with the rise of Chandragupta Maurya [3]. Therefore, the mismatch lies in attributing the 'Mahabhashya' to Panini instead of Patanjali.

Sources

1. [2] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 4: Emergence of State and Empire > Taxila > p. 49
2. [3] https://www.deshbandhucollege.ac.in/pdf/resources/1585759255_HS(H)-IV-SEC-Lec1.pdf
3. [4] https://ia801402.us.archive.org/28/items/history-of-ancient-and-early-medeival-india-from-the-stone-age-to-the-12th-century-pdfdrive/History%20of%20Ancient%20and%20Early%20Medeival%20India_%20From%20the%20Stone%20Age%20to%20the%2012th%20Century%20%28%20PDFDrive%20%29.pdf
4. [1] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 7: The Guptas > Sanskrit Grammar > p. 99
5. [5] https://ddceutkal.ac.in/Syllabus/MA_history/paper-10-N.pdf
6. [6] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 4: Emergence of State and Empire > I. Choose the Correct Answer > p. 61