Shiva Purana
प्रथमावरणे पूज्यो क्रमाद्धेरम्बषण्मुखौ ॥ ब्रह्मांगानि ततश्चैव प्रथमावरणेर्चिते ॥ ४६ ॥
In the first (outer column of the mystic diagram) Gaṇeśa and Kārttikeya shall be worshipped. Brahmā’s body shall also be worshipped.
english translation
prathamAvaraNe pUjyo kramAddherambaSaNmukhau ॥ brahmAMgAni tatazcaiva prathamAvaraNercite ॥ 46 ॥
hk transliteration by Sanscript