Shiva Purana
धर्मार्थयोस्ततो यत्नं कुर्यात्कामी न चेतरः । ब्राह्मणो मुक्तिकामः स्याद्ब्रह्मज्ञानं सदाभ्यसेत् 1-13-५० ।
Only the person who has a cherished desire shall endeavour for virtue and wealth and not others. A brahmin shall seek salvation and practise the ways of realising Brahman for ever.
english translation
dharmArthayostato yatnaM kuryAtkAmI na cetaraH । brAhmaNo muktikAmaH syAdbrahmajJAnaM sadAbhyaset 1-13-50 ।
hk transliteration by Sanscript