Shiva Purana
दक्षिणे तु यजेद्रुद्रमावोराजानमित्यृचा ॥ आवाह्य गन्धपुष्पाद्यैः कर्णिकायान्दलेषु च ॥ १५ ॥
He shall worship Rudra in the south after invoking him with Ṛk “Ā vo rājānam” in the petals and the pericarp with scents, flowers etc.
english translation
dakSiNe tu yajedrudramAvorAjAnamityRcA ॥ AvAhya gandhapuSpAdyaiH karNikAyAndaleSu ca ॥ 15 ॥
hk transliteration by Sanscript