Shiva Purana
सप्रसादाश्च ते मंत्राः स्वाधिकाराद्यपेक्षया ॥ सर्वाधिकारस्त्वेको ऽयं मंत्र एवेश्वराज्ञया ॥ ४३ ॥
Those Mantras are also beneficent with regard to those who are authorized therein. At the behest of the lord every one is authorized in this Mantra.
english translation
saprasAdAzca te maMtrAH svAdhikArAdyapekSayA ॥ sarvAdhikArastveko 'yaM maMtra evezvarAjJayA ॥ 43 ॥
hk transliteration by Sanscript