Shiva Purana

siva.sh/siva-purana/vayaviya-samhita/47/34

किं तस्य बहुभिर्मंत्रैश्शास्त्रैर्वा बहुविस्तरैः ॥ यस्योन्नमः शिवायेति मन्त्रो ऽयं हृदि संस्थितः ॥ ३४ ॥

sanskrit

Of what avail are many mantras and Śāstras full of details to one whose heart is firmly established in the mantra “Om Namaḥ Śivāya?”

english translation

kiM tasya bahubhirmaMtraizzAstrairvA bahuvistaraiH ॥ yasyonnamaH zivAyeti mantro 'yaM hRdi saMsthitaH ॥ 34 ॥

hk transliteration by Sanscript

siva.sh/siva-purana/vayaviya-samhita/47/34

किं तस्य बहुभिर्मंत्रैश्शास्त्रैर्वा बहुविस्तरैः ॥ यस्योन्नमः शिवायेति मन्त्रो ऽयं हृदि संस्थितः ॥ ३४ ॥

sanskrit

Of what avail are many mantras and Śāstras full of details to one whose heart is firmly established in the mantra “Om Namaḥ Śivāya?”

english translation

kiM tasya bahubhirmaMtraizzAstrairvA bahuvistaraiH ॥ yasyonnamaH zivAyeti mantro 'yaM hRdi saMsthitaH ॥ 34 ॥

hk transliteration by Sanscript