Brihat Samhita
पुष्यऽग्नेयविशाखाभरणीपित्र्याजभाग्यसंज्ञानि । वर्गो हौतभुजो अयं करोति रूपाण्यथएतानि ॥ ३२-१२ ॥
The asterisms of Puṣya, Kṛttikā, Viśākhā, Bharaṇī, Maghā, Pūrvabhādra and Pūrvaphālguni are known as the circle of Agni. The previous symptoms of an earthquake of Agni occuring when the Moon is in any of these seven asterisms, will last for seven days.
english translation
puSya'gneyavizAkhAbharaNIpitryAjabhAgyasaMjJAni । vargo hautabhujo ayaM karoti rUpANyathaetAni ॥ 32-12 ॥
hk transliteration by Sanscript