Hayanaratna · by Balabhadra
Chapter 1 · Planets, Signs, Year Entry
ग्रहराशिस्वरूपवर्षप्रवेशाद्यानयनाधिकारः
तन्मूलभूतत्वात्सदमरसिंहादिशास्त्रस्याप्यध्ययनमनुचितं मूलाशुद्ध्या सर्वमशुद्धमितिन्यायात् ॥
That Yavana work is their root. So even the study of the works of the good Samarasimha and others is not proper. For there is the rule: when the root is impure, all is impure.
Simple meaning: 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.
उक्तं च कश्यपेन ॥
The eighteen founders of astrology, part 1: Surya, Pitamaha, Vyasa, Vasishtha, Atri, Parashara, Kashyapa, Narada, Garga, Marichi, Manu, Angiras.
लोमशः पौलिशश्चैव च्यवनो यवनो गुरुः ॥
The eighteen founders, part 2: Lomasha, Paulisha, Chyavana, Yavana, Guru, Shaunaka.