Sarvasiddhāntarāja (1639) · 1639 CE
No published e-text exists; the verse is readable in Pai & Shylaja's edition (JApA 42:113, 2021, open access), whose PDF is not machine-extractable (no ToUnicode maps). Pending an OCR proofread — never retyped.
Mātṛcakra, the mothers' circle, of the second order of brightness. — Literal rendering by the compiler
The Crown as the circle of the Mothers; the Yantrarāja tradition carries the same object as Mātṛmaṇḍala rendering Arabic al-Fakka. Pai & Shylaja's table admits δ Boo as an alternative reduction. Identification and verse number per Pai & Shylaja (2021), Table 1; rendering after the edition's construal.
Sarvasiddhāntarāja, saṃkrāntyādi 37 (ed. Pai & Shylaja 2021) · text · translation