Brihat Samhita
हन्त्यैन्द्रो वायव्यं वायुश्चाप्यैन्द्रं एवं अन्योन्यम् । वारुणहौतभुजावपि वेलानक्षत्रजाः कम्पाः ॥ ३२-२७ ॥
The Indra-mandala (East/Earth) destroys ॥ the effects of॥ the Vayu-mandala (North-West/Air), and the Vayu-mandala likewise destroys the Indra-mandala; in the same way, the Varuna-mandala (West/Water) and the Agni-mandala (South-East/Fire) counteract each other. Furthermore, the effects of earthquakes (Kampa) are determined specifically by the time of day (Vela) and the lunar mansion (Nakshatra) in which they occur.
english translation
hantyaindro vAyavyaM vAyuzcApyaindraM evaM anyonyam । vAruNahautabhujAvapi velAnakSatrajAH kampAH ॥ 32-27 ॥
hk transliteration by Sanscript