The Śata-piṭaka Series on the Śākhās of the Yajurveda – estimated to have been composed between 1200 and 1000 BCE – mention of a "Kapila Śākhā" situated in the Āryāvarta, which implies a Yajurveda school was named after Kapila. The term Kapileya, meaning "clans of Kapila", occurs in the Aitareya Brahmana VII.17 but provides no information on the original Kapila. The pariśiṣṭa (addenda) of the Atharvaveda (at XI.III.3.4) mentions Kapila, Āsuri and Pañcaśikha in connection with a libation ritual for whom "tarpana" is to be offered. In verse 5.2 of Shvetashvatara Upanishad, states Larson, both the terms Samkhya and Kapila appear, with Kapila meaning color as well as a "seer" (Rishi) with the phrase ""ṛṣiṃ prasūtaṃ kapilam ... tam agre..""; which when compared to other verses of the Shvetashvatara Upanishad Kapila likely construes to Rudra and Hiranyagarbha. However, Max Muller is of view that Hiranyagarbha, namely Kapila in this context, varies with the tenor of the Upanishad, was distinct and was later used to link Kapila and assign the authorship of Sankya system to Hiranyagarbha in reverence for the philosophical system.