Rishi: Gṛtsamada (traditionally for Mandala 2, Agni hymns of the Gṛtsamada lineage)
Devata: Agni (with explicit invocation of Tvaṣṭṛ as the Fashioner aiding formation/progeny)
Chandas: Triṣṭubh (probable; RV 2.3 commonly in Triṣṭubh—needs metrical verification)
Samhita Patha (Devanagari)पिशङ्गरूपः सुभरो वयोधाः श्रुष्टी वीरो जायते देवकामः । प्रजां त्वष्टा वि ष्यतु नाभिमस्मे अथा देवानामप्येतु पाथः ॥
Recitation with translationRig Veda 2.3.9
Transliterationpiśáṅga-rūpaḥ su-bháro vayaḥ-dhā́ḥ śruṣṭī́ vīró jā́yate devá-kāmaḥ | prajā́ṃ tvaṣṭā́ ví ṣyatu nā́bhim asmè áthā devā́nām ápy etu pā́thaḥ ||
Translationपिशङ्गरूपः सुभरो वयोधाः श्रुष्टी वीरो जायते देवकामः। प्रजां त्वष्टा विष्यतु नाभिमस्मे अथ देवाना॒मप्येतु पाथः॥
Word by Wordपिशङ्गरूपःof tawny/variegated form सुभरःwell-bearing; bringing good support वयोधाःthe sustainer of vital power/strength श्रुष्टीobedience/ready service (ritual attentiveness) जायतेis born; comes into being देवकामःdesiring the gods; god-loving प्रजाम्offspring; progeny त्वष्टाTvaṣṭṛ (the divine artisan) ष्यतुlet him beget/impel/bring forth नाभिम्navel; central bond/seat एतुlet (him/it) go; may it come 
