Shiva Purana
दक्षिणांगान्महेशस्य जातो ब्रह्मात्मसंज्ञिकः ॥ वामांगादभवद्विष्णुस्ततो विद्येति संज्ञितः ॥ ४७ ॥
From the southern limb of Lord Maheśa was born a son named Brahmātma. From the left limb came Vishnu and from him was born Vidya.
english translation
dakSiNAMgAnmahezasya jAto brahmAtmasaMjJikaH ॥ vAmAMgAdabhavadviSNustato vidyeti saMjJitaH ॥ 47 ॥
hk transliteration by Sanscript