Brihat Samhita
पौष्णऽप्यऽर्द्राआश्लेषामूलाहिर्बुध्न्यवरुणदेवानि । मण्डलं एतद्वारुणं अस्यापि भवन्ति रूपाणि ॥ ३२-२० ॥
The asterisms of Revatī, Pūrvāṣāḍha, Ārdrā, Āśleṣā, Mūla, Uttarāṣāḍha and Śatabhiṣaj are known as the circle of Varuṇa. The previous symptoms of an earthquake of Varuṇa occurring when the Moon is in any of these seven asterisms are as follows:
english translation
pauSNa'pya'rdrAAzleSAmUlAhirbudhnyavaruNadevAni । maNDalaM etadvAruNaM asyApi bhavanti rUpANi ॥ 32-20 ॥
hk transliteration by Sanscript