Examples:
Verse 1.164.34, "What is the ultimate limit of the earth?", "What is the center of the universe?", "What is the semen of the cosmic horse?", "What is the ultimate source of human speech?"
Verse 1.164.34, "Who gave blood, soul, spirit to the earth?", "How could the unstructured universe give origin to this structured world?"
Verse 1.164.5, "Where does the sun hide in the night?", "Where do gods live?"
Verse 1.164.6, "What, where is the unborn support for the born universe?";
Verse 1.164.20 (a hymn that is widely cited in the Upanishads as the parable of the Body and the Soul): "Two birds with fair wings, inseparable companions; Have found refuge in the same sheltering tree. One incessantly eats from the fig tree; the other, not eating, just looks on.";
Rigveda Book 1, Hymn 164 Wikisource;
See translations of these verses: Stephanie W. Jamison; Joel Brereton (2014). The Rigveda: 3-Volume Set. Oxford University Press. ISBN978-0-19-972078-1.
Michael Witzel (2012). George Erdosy, ed. The Indo-Aryans of Ancient South Asia: Language, Material Culture and Ethnicity. Walter de Gruyter. hlm. 98–110 with footnotes. ISBN978-3-11-081643-3., Quote (p. 99): "Although the Middle/Late Vedic periods are the earliest for which we can reconstruct a linguistic map, the situation even at the time of the Indua Civilisation and certainly during the time of the earliest texts of the Rigveda, cannot have been very different. There are clear indications that the speakers of Rigvedic Sanskrit knew, and interacted with, Dravidian and Munda speakers."
Examples:
Verse 1.164.34, "What is the ultimate limit of the earth?", "What is the center of the universe?", "What is the semen of the cosmic horse?", "What is the ultimate source of human speech?"
Verse 1.164.34, "Who gave blood, soul, spirit to the earth?", "How could the unstructured universe give origin to this structured world?"
Verse 1.164.5, "Where does the sun hide in the night?", "Where do gods live?"
Verse 1.164.6, "What, where is the unborn support for the born universe?";
Verse 1.164.20 (a hymn that is widely cited in the Upanishads as the parable of the Body and the Soul): "Two birds with fair wings, inseparable companions; Have found refuge in the same sheltering tree. One incessantly eats from the fig tree; the other, not eating, just looks on.";
Rigveda Book 1, Hymn 164 Wikisource;
See translations of these verses: Stephanie W. Jamison; Joel Brereton (2014). The Rigveda: 3-Volume Set. Oxford University Press. ISBN978-0-19-972078-1.