Rig Veda 8.2.8

Sanskrit text [Accents, Plain, Transliterated]:

त्रय॒: कोशा॑सः श्चोतन्ति ति॒स्रश्च॒म्व१॒॑: सुपू॑र्णाः । स॒मा॒ने अधि॒ भार्म॑न् ॥
त्रयः कोशासः श्चोतन्ति तिस्रश्चम्वः सुपूर्णाः । समाने अधि भार्मन् ॥
trayaḥ kośāsaḥ ścotanti tisraś camvaḥ supūrṇāḥ | samāne adhi bhārman ||

English translation:

“Three purifying vessels drop (the Soma), three ladles are well filled (for the libation), the whole isfurnished for the common sacrifice.”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

The allusion is to the three daily sacrifices. The three vessels are the threetroughs used in the preparation of the Soma libations: droṇakalaśa, pūtabhṛt and āhavanīya. The threeladles are the three sets of cups, camaṣāḥ, used in the three libations

Details:

Ṛṣi (sage/seer): medhātithiḥ kāṇvaḥ priyamedhaścāṅgirasaḥ [medhātithi kāṇva priyamedhaścāṅgirasa];
Devatā (deity/subject-matter): indra:;
Chandas (meter): virāḍārṣīgāyatrī ;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

त्रयः॑ । कोशा॑सः । श्चो॒त॒न्ति॒ । ति॒स्रः । च॒म्वः॑ । सुऽपू॑र्णाः । स॒मा॒ने । अधि॑ । भार्म॑न् ॥
त्रयः । कोशासः । श्चोतन्ति । तिस्रः । चम्वः । सुपूर्णाः । समाने । अधि । भार्मन् ॥
trayaḥ | kośāsaḥ | ścotanti | tisraḥ | camvaḥ | su-pūrṇāḥ | samāne | adhi | bhārman

Multi-layer Annotation of the Ṛgveda

[Rigveda 8.2.8 English analysis of grammar]