 हविराज्यं पुरोडाशाः कुशा यूपाश्च खादिराः।नैतानि यातयामानि कुर्वन्ति पुनरध्वरे।। 
 Havis, sacrificial offerings like ghee, cakes, kusha grass, and sacrificial posts made from khadira wood, once used in the sacrifice cannot be used again. 