Jaiminīya (Talavakāra) Brāhmaṇa 2-8.420

2-8.420

sa hovāca yadvo'vocaṃ ṣaṭsu sma pratiṣṭhāsu pratitiṣṭheti nidhanavanti sma
pavamānamukhebhyo mā cyāvayatetyeva vastadavocamiti
eṣā ha vai sāmnaḥ pratiṣṭhā yannidhanam
ṣaḍetāni nidhanavanti bhavanti ṣaḍṛtavassaṃvatsaraḥ
sa yathā vṛkṣamākramaṇairākramamāṇa iyādevamevaitaissāmanidhanai svargaṃ lokaṃ
rohanto yanti
tasmānnidhanavanti pavamānamukhebhyo na cyāvayitavyāni
atha yadvo'vācaṃ ṣaḍbhya sma haritmatībhyo metetīḷāvibhaktireva
vastadavocamiḷābhi sma bṛhatīrārabhadhvamityeva vastadavocamiti
tā etāṣṣaritmatīḥ
sa yathā ṣaritmatīraśvatarīssaṃyujya yatra
jigamiṣettadgacchedevamevaitābhiriḷāvibhaktibhi svargaṃ lokamabhyaśnuvate
tasmādiḷābhireva bṛhatīrārabhyāḥ

He said: "When I told you, 'Stand firm on six firm foundations,' I told you only this: 'Do not displace those having finales (nidhanas) from the heads of the pavamāna [lauds]!' For this indeed is the firm foundation of a sāman, namely the finale. These ones having finales are six; six are the seasons, the year. Just as one would climb a tree stepping with foot-supports, even so do they go climbing to the heavenly world by means of these sāman-finales. Therefore those having finales are not to be displaced from the heads of the pavamāna [lauds]. And when I told you, 'Do not go away from the six possessing yellowish bays,' I told you only this: 'Take hold of the Bṛhatī verses with the iḷā-divisions (iḷābhiḥ)! Do not go away from the six possessing yellowish bays!' These are those [verses] having streams/bays. Just as having yoked female mules possessing speed/bays one would go where one wishes to go, even so by these iḷā-divisions do they reach the heavenly world. Therefore the Bṛhatī verses are indeed to be grasped with the iḷās.