Shiva Purana
शिव उवाच ॥ सत्यं धर्मं च धैर्यं च भक्तिं च मयि निश्चलाम् ॥ परीक्षितुं त्वत्सकाशं वैश्यो भूत्वाहमागतः ॥ ५४॥
Śiva said:— It is to test your truthfulness, piety, courage and steady devotion to me that I came near you assuming the form of a merchant.
english translation
ziva uvAca ॥ satyaM dharmaM ca dhairyaM ca bhaktiM ca mayi nizcalAm ॥ parIkSituM tvatsakAzaM vaizyo bhUtvAhamAgataH ॥ 54॥
hk transliteration by Sanscript