In the historical Vedic religion, Tvaṣṭṛ is the first-born creator of the universe. The Purusha Sukta refers to the Purusha as Tvastr, who is the visible form of creativity emerged from the navel of the invisible Vishvakarman. In the Yajurveda, Purusha Sukta and the tenth mandala of the Rigveda, his character and attributes are merged with the concept of Hiranyagharbha/Prajapathy or Brahma. The term, also transliterated as Tvaṣṭr, nominative Tvaṣṭā, is the heavenly builder, the maker of divine implements, especially Indra's Vajra and the guardian of Soma. Tvaṣṭṛ is mentioned 65 times in the Ṛgveda and is the former of the bodies of men and animals,' and invoked when desiring offspring, called garbha-pati or the lord of the womb. The term Tvaṣṭṛ is mentioned in the Mitanni treaty, which establishes him as a proto-Indo-Iranian divinity.
As per the Ṛgveda, Tvaṣṭr belongs to clan of the Bhṛgus. Similarly, as mentioned in the epic Mahābhārata, Tvaṣṭr is Śukra's son. Tvaṣṭṛ is sometimes associated or identified with similar deities, such as Savitṛ, Prajāpatī, Vishvakarman and Puṣan. He is the father of Saranyu, who twice bears twins to Surya (RV 10.17.1), Yama and Yami. He is also the father of Viśvarūpa or Triśiras who was killed by Indra, and in revenge Tvaṣṭṛ created Vrtra a fearsome dragon. Surprisingly he is also referred to as Indra's father.
- अ॒द्भ्यः सम्भू॑तः पृथि॒व्यै रसा॓च्च । वि॒श्वक॑र्मणः॒ सम॑वर्त॒ताधि॑ । तस्य॒ त्वष्टा॑ वि॒दध॑द्रू॒पमे॑ति । तत्पुरु॑षस्य॒ विश्व॒माजा॑न॒मग्रे॓ ॥ Rigveda 10-82
- Macdonell, Arthur Anthony (1995). "Abstract Gods". Vedic mythology. Vedas. Motilal Banarsidass Publ. pp. 116–118. ISBN 9788120811133.
- "Anuśāsana parva". Mahābhārata (in Sanskrit).
- Wikisource:The Rig Veda/Mandala 10/Hymn 17