Occurrences

Atharvaveda (Paippalāda)
Atharvaveda (Śaunaka)
Ṛgveda

Atharvaveda (Paippalāda)
AVP, 10, 7, 3.1 tisro divas tisraḥ pṛthivīs trīṇy antarikṣāṇi caturaḥ samudrān /
Atharvaveda (Śaunaka)
AVŚ, 4, 20, 2.1 tisro divas tisraḥ pṛthivīḥ ṣaṭ cemāḥ pradiśaḥ pṛthak /
Ṛgveda
ṚV, 4, 53, 5.2 tisro divaḥ pṛthivīs tisra invati tribhir vratair abhi no rakṣati tmanā //