Rishi: RV-derived Soma-stuti tradition (as received in VS).
Devata: Soma
Chandas: Gāyatrī (short, 3×8-type structure typical of gāyatrī stanzas)
Samhita Patha (Devanagari)आ प्या॑यस्व मदिन्तम॒ सोम॒ विश्वे॑भिर॒ᳪशुभि॑ः । भवा॑ नः स॒प्रथ॑स्तम॒ः सखा॑ वृ॒धे
Transliterationā pyāyasva madintama soma viśvebhir aṃśubhiḥ | bhavā naḥ saprathastamaḥ sakhā vṛdhe ||
Translationहे सोम! अत्यन्त आनन्ददायक, तू अपने समस्त शुभ किरणों सहित बढ़ और परिपुष्ट हो। हमारे लिए तू सर्वाधिक व्यापक रूप से फैलने वाला, हमारी वृद्धि का मित्र बन।
Padapatha (Word Analysis)आ । प्यायस्व । मदिन्तम । सोम । विश्वेभिः । अंशुभिः । भव । नः । स-प्रथः-तमः । सखा । वृधे
Word by Wordआtowards; forth (preverb) प्यायस्वswell; grow strong; become full मदिन्-तमmost intoxicating; most exhilarating सोमSoma (the pressed sacred drink/deity) अंशुभिःwith rays; with stalks/streams (of Soma) स-प्रथस्-तमःmost widely-extending; most expansive वृधेfor growth; for increase; for prosperity 
Viniyoga (Ritual Application)