Shivapurana 2.1.14.24

Śivapurāṇa (complete text) 2.1.14.24

pañcamaṃ ca yadā lakṣaṃ phalaṃ yacchatyasaṃśayam |
anenaiva tu mantreṇa daśalakṣe phalaṃ bhavet ||