Hayanaratna · by Balabhadra
Chapter 1 · Planets, Signs, Year Entry
ग्रहराशिस्वरूपवर्षप्रवेशाद्यानयनाधिकारः
सिद्धान्तसुन्दरेपि॥मुनिप्रणीते मनुजैः क्वचिच्च दृश्यतेऽन्तरम् ॥तदा तदेव संसाध्यं न कार्यं सर्वमन्यथेति ॥
Also in the Siddhanta Sundara: Sometimes people see a difference in what the sages wrote. Then only that should be worked in. Not everything should be done another way.
Simple meaning: When a gap is seen in the sages' figures: correct only that gap, not the whole method.
तदन्तरं बीजसंज्ञब्रह्मगुप्तमकरंदमिश्रादिभिः स्वसत्तादिकाले लक्षयित्वा मुनिशास्त्रजनितेषु ग्रहेषु संस्कृतं तद्युक्तमेव ॥
The correction number: later teachers measured the gap in their own time and added it to the sages' planets. That is right.
तथाच ब्रह्मसिद्धांते ॥
Brahma Siddhanta: measure the correction with instruments, then judge from the corrected planets.
अथ पञ्चाङ्गयंत्रादेव तात्कालिकीकरणेन स्पष्टग्रहानयनमुक्तं श्रीमन्नीलकण्ठदैवज्ञैः ।
Same verse as Tajika Nilakanthi 1.18; see its meaning there.