Manusmriti

siva.sh/manusmriti/4/105

निर्घाते भूमिचलने ज्योतिषां चोपसर्जने । एतानाकालिकान् विद्यादनध्यायान् ऋतावपि ॥ १०५ ॥

sanskrit

On (the occasion of) a preternatural sound from the sky, (of) an earthquake, and when the lights of heaven are surrounded by a halo, let him know that (the Veda-study must be) stopped until the same hour (on the next day), even if (these phenomena happen) in the (rainy) season.

english translation

nirghAte bhUmicalane jyotiSAM copasarjane | etAnAkAlikAn vidyAdanadhyAyAn RtAvapi || 105 ||

hk transliteration by Sanscript