Shiva Purana
नैर्ऋत्ये पूजयेद्देवं विघ्रेशं देवपूजितम्॥ गणानां त्वेति मन्त्रेणावाहयेत्सुविधानतः ॥ २॥
With the mantra, “Gaṇānām tvā” he shall as enjoined invoke lord Gaṇapati worshipped by the gods. He shall worship hīm in the south-west.
english translation
nairRtye pUjayeddevaM vighrezaM devapUjitam॥ gaNAnAM tveti mantreNAvAhayetsuvidhAnataH ॥ 2॥
hk transliteration by Sanscript