Shiva Purana
उन्मनान्तं शिवं नीत्वा वामनासापुटाध्वना॥ देवोमुद्वास्य च ततो दक्षनासापुटाध्वना ॥ २५॥
He took Shiva to the end of his madness by the path of the left nostril. Then he drove the deity out of the right nostril.
english translation
unmanAntaM zivaM nItvA vAmanAsApuTAdhvanA॥ devomudvAsya ca tato dakSanAsApuTAdhvanA ॥ 25॥
hk transliteration by Sanscript