Garudapurana 1.96.48

1.96.48

sandhyāgarjitanirghātabhūkampolkānipātane /
samāpya vedaṃ dyuniśamāraṇyakamadhītya ca //

There is a break in study at the twilights, during thunder, thunderbolts, earthquakes, and meteor falls; / having finished the Veda, for a day and a night, and after studying the Āraṇyaka;