Shiva Purana
गत्वा तत्र ततो रामस्तर्तुकामो यथा ततः ॥ शिवलिंगं समानर्च प्रतिष्ठाप्य जयेप्सया ॥ २९ ॥
At the time when he was about to cross the ocean, Rāma installed a phallic image of Śiva and worshipped it with a desire to be victorious.
english translation
gatvA tatra tato rAmastartukAmo yathA tataH ॥ zivaliMgaM samAnarca pratiSThApya jayepsayA ॥ 29 ॥
hk transliteration by Sanscript