Shiva Purana
आश्विनस्य सिते पक्षे व्रतं कृत्वा विधानतः ॥ तस्य सर्वं मनोभीष्टं पूरयत्यनिशं शिवा ॥ ७९॥
After observing a vow in the white fortnight of Ashwin in accordance with the prescribed rituals Shiva always fulfills all his desires.
english translation
Azvinasya site pakSe vrataM kRtvA vidhAnataH ॥ tasya sarvaM manobhISTaM pUrayatyanizaM zivA ॥ 79॥
hk transliteration by Sanscript