Manava Dharmashastra 4.103

4.103

vidyuttaḍit | stanitaṃ garjitam | dvandvanirdeśādyugapadeteṣu samuñciteṣvanadhyāyaḥ | maholkā divaḥ patatāṃ jyotiṣāṃ prabhā uktāstāsāṃ saṃplavaḥ atrāmutra ca patanam | ākālikaśabdo nimittakālādārabhyānyedyuryāvāṃsta eva kālaḥ sa ucyate | manugrahaṇaṃ ślokapūraṇārtham | vikalpārthamanye |

Medhātithi’s commentary (manubhāṣya):
‘Vidyut’— lightning;—‘stanita’—thunder. The copulative compound indicates that it is ‘time unfit for study’ only when all these appear simultaneously.

‘Meteor’—is the name given to the light emanating from the stars that fall from the sky;—‘the promiscuous falling’ of these is their falling here and there.

The term ‘ākālikam’ stands for the time beginning from the occurrences mentioned and ending with the same time on the following day.

The name of Manu has been, mentioned for the purpose of filling up the verse. Others have explained this to mean that an option is meant.—(103)