In Vedic culture, which of the following was not one of the Panch Mahayagyas performed by a Grihastha ?

In the Vedic and Dharmashastric tradition (such as Manusmriti 3.70 and Shatapatha Brahmana 11.5.6.1), a householder (Grihastha) is enjoined to perform five daily great sacrifices (Panch Mahayagyas): Brahma or Rishi Yagya (study and teaching of the Vedas), Dev Yagya (oblations to the gods), Pitra Yagya (offerings to ancestors), Bhuta Yagya (offerings to living beings), and Nri or Manushya Yagya (hospitality to guests). Ashvamedha Yagya was a grand royal Shrauta sacrifice performed by sovereign kings, not one of the daily household Panch Mahayagyas.