Jaiminīya (Talavakāra) Brāhmaṇa 2-7.232

2-7.232

tā asya prajā vṛtrātpāpmano mumucānāssarvāssākaṃ samaidhayanta
yatsākaṃ samaidhayanta tatsākamedhānāṃ sākamedhatvam
sākaṃ ha vai prajayā paśubhiredhate ya evaṃ veda
anīkavatī prathamasyāhnaḥ pratipadbhavati
āgneyaḥ paśuḥ
agninā vā anīkenendro vṛtraṃ pāpmānamahan
tadyadanīkavatī pratipadbhavatyagninānīkena vṛtraṃ pāpmānaṃ hanānīti
agninaivānīkena dviṣantaṃ pāpmānaṃ bhrātṛvyaṃ hanti ya evaṃ veda
krīḍanī dvitīyasyāhnaḥ pratipadbhavati
āgneyaścaindrāgnaśca paśū
tadyatkrīḍanī pratipadbhavati yadeva prajā vṛtrātpāpmano mumucānā ākrīḍanta
tasmātkrīḍanī
atho hendro vṛtraṃ haniṣyanmaruta uvāca paraśuvadhahastā māmabhitaḥ parikrīḍata sa
vītabhīrvṛtraṃ pāpmānaṃ hanānīti
tamu ha marutaḥ paraśuvadhahastā abhitaḥ paricikrīḍuḥ
sa ha vītabhīrvṛtraṃ pāpmānamahan
vītabhīrha vai dviṣantaṃ pāpmānaṃ bhrātṛvyaṃ hanti ya evaṃ veda
āgneyaḥ paśuryajño vā agnirnedyajñādagnerayāmeti

When these creatures of his were released from Vṛtra, evil, they all thrived together (sākaṃ samaidhayanta).
In that they thrived together, that is the Sākamedha nature of the Sākamedhas.
Together with offspring and cattle he thrives, whoever knows thus.
The introductory verse of the first day contains 'anīka' (anīkavatī).
The animal is for Agni.
With Agni as the vanguard (anīka), Indra smote Vṛtra, evil.
In that the introductory verse contains 'anīka', [it is with the thought:] 'With Agni as the vanguard may I smite Vṛtra, evil.'
With Agni as the vanguard he smites his hateful, evil rival, whoever knows thus.
The introductory verse of the second day contains 'krīḍan' (krīḍanī).
The animals are for Agni and for Indra-and-Agni.
In that the introductory verse contains 'krīḍan', it is because the creatures, when released from Vṛtra, evil, played about (ākrīḍanta); therefore it contains 'krīḍan'.
Moreover, Indra, when about to smite Vṛtra, said to the Maruts: 'With axes in hand, play around me, so that free from fear I may smite Vṛtra, evil.'
The Maruts, with axes in hand, played around him.
Free from fear, he smote Vṛtra, evil.
Free from fear, he smites his hateful, evil rival, whoever knows thus.
The animal is for Agni; the sacrifice is Agni, lest we go away from Agni, the sacrifice.