Shiva Purana
तत्रापि मूलमंत्रो ऽयं किंचिद्भेदसमन्वयात् ॥ तत्रापि पञ्चमो वर्णो द्वादशस्वरभूषितः ॥ ५४ ॥
There too, the same is the Mūlamantra with a slight difference. The fifth Varṇa is bedecked by the twelfth vowel (‘ḥ’).
english translation
tatrApi mUlamaMtro 'yaM kiMcidbhedasamanvayAt ॥ tatrApi paJcamo varNo dvAdazasvarabhUSitaH ॥ 54 ॥
hk transliteration by Sanscript