Hayanaratna · by Balabhadra
Chapter 1 · Planets, Signs, Year Entry
ग्रहराशिस्वरूपवर्षप्रवेशाद्यानयनाधिकारः
ननु यवनाचार्य्यप्रणीतेक्कवालादिपारसीशब्दात्मकस्य ताजिकशास्त्रस्याध्यापनमेव तावदनभिहितम् ॥ अध्ययनं तु दूरादपास्तमेव ॥
But one may object: the Tajika science was made by Yavanacharya. It is made of Persian words like ikkabala (all planets in strong houses). Its teaching is not even allowed. Its study is ruled out all the more.
Simple meaning: An objection: the Tajika uses Persian words, so teaching and studying it seem not allowed.
उक्तं च स्मृतौ ॥
The Smriti rule: never speak the foreign tongue, even when close to the end.
तन्मूलभूतत्वात्सदमरसिंहादिशास्त्रस्याप्यध्ययनमनुचितं मूलाशुद्ध्या सर्वमशुद्धमितिन्यायात् ॥
The objection goes on: Samarasimha's work grows from the Yavana work, so it too seems unfit.
अत्रोच्यते । यवनाचार्यस्याष्टादशसंहिताकर्तृषु परिगणितत्वात्तद्वचः प्रमाणमेव ॥
Answer: Yavanacharya is one of the eighteen founders, so his words count.