Manusmriti
तपसैव विशुद्धस्य ब्राह्मणस्य दिवौकसः । इज्याश्च प्रतिगृह्णन्ति कामान् संवर्धयन्ति च ॥ २४२ ॥
The gods accept the offerings of that Brahmana alone who has purified himself by austerities, and grant to him all he desires.
english translation
tapasaiva vizuddhasya brAhmaNasya divaukasaH । ijyAzca pratigRhNanti kAmAn saMvardhayanti ca ॥ 242 ॥
hk transliteration by Sanscript