Shiva Purana
रमाशाक्तियुतो वामे सर्व्वरक्षाकरो महान्॥ चतुर्भुजोऽरविंदाक्षः श्यामश्शंखादिचिह्नभृत् ॥ २२ ॥
He is associated with Lakṣmī Śakti on the left. He is the protector of all. He has four arms. He has eyes as splendid as the lotus. He is dark-complexioned and bears the characteristics of Śaṅkha etc.
english translation
ramAzAktiyuto vAme sarvvarakSAkaro mahAn॥ caturbhujo'raviMdAkSaH zyAmazzaMkhAdicihnabhRt ॥ 22 ॥
hk transliteration by Sanscript