Shiva Purana
नमस्कारादिसंयुक्तं शिवायेत्यक्षरत्रयम् ॥ जिह्वाग्रे वर्तते यस्य सफलं तस्य जीवितम् ॥ ३६ ॥
Life is fruitful indeed, of the person, at the tip of whose tongue is present the sec of three syllables ‘Śivāya’ prefixed with the word denoting obeisance.
english translation
namaskArAdisaMyuktaM zivAyetyakSaratrayam ॥ jihvAgre vartate yasya saphalaM tasya jIvitam ॥ 36 ॥
hk transliteration by Sanscript