Shivapurana 7.2.36.26

Śivapurāṇa (complete text) 7.2.36.26

pradhānamekamevātra juhuyādatha vā guruḥ |
pūrvaṃ pūrṇāhutiṃ hutvā ghṛtenāṣṭottaraṃ śatam ||