Rig Veda 1.13.9

Sanskrit text [Accents, Plain, Transliterated]:

इळा॒ सर॑स्वती म॒ही ति॒स्रो दे॒वीर्म॑यो॒भुव॑: । ब॒र्हिः सी॑दन्त्व॒स्रिध॑: ॥
इळा सरस्वती मही तिस्रो देवीर्मयोभुवः । बर्हिः सीदन्त्वस्रिधः ॥
iḻā sarasvatī mahī tisro devīr mayobhuvaḥ | barhiḥ sīdantv asridhaḥ ||

English translation:

“May the three undecaying goddesses, givers of delight, Iḷā, Sarasvatī, and Mahī (= Bhāratī), sit down upon the sacred grass.”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

Mahi = Bhārati; Iḷā, Sarasvatī, Bhāratī are person nifications of agni: agnimūrtayaḥ; they are also three person nified flames of fire. As goddesses, Iḷā = earth (bride of Viṣṇu);

Sarasvatī = goddess of eloquence (wife of Brahmā);

Bharatī = speech (wife of Bharata, an Āditya)

Details:

Ṛṣi (sage/seer): medhātithiḥ kāṇvaḥ [medhātithi kāṇva];
Devatā (deity/subject-matter): tistro devyaḥ- sarasvatīḷābhāratyaḥ ;
Chandas (meter): nicṛdgāyatrī ;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

इळा॑ । सर॑स्वती । म॒ही । ति॒स्रः । दे॒वीः । म॒यः॒ऽभुवः॑ । ब॒र्हिः । सी॒द॒न्तु॒ । अ॒स्त्रिधः॑ ॥
इळा । सरस्वती । मही । तिस्रः । देवीः । मयःभुवः । बर्हिः । सीदन्तु । अस्त्रिधः ॥
iḷā | sarasvatī | mahī | tisraḥ | devīḥ | mayaḥ-bhuvaḥ | barhiḥ | sīdantu | asridhaḥ

Multi-layer Annotation of the Ṛgveda

[Rigveda 1.13.9 English analysis of grammar]