Śatapatha Brāhmaṇa ("of a hundred paths") 6.6.4.9

6.6.4.9

atha mṛdamāhṛtya | ukhāṃ copaśayāṃ ca piṣṭvā saṃsṛjyokhāṃ karotyetayaivāvṛtānupaharanyajustūṣṇīmeva paktvā paryāvapati karmaṇireva tatra prāyaścittiḥ punastatkapālamukhāyāmupasamasyokhāṃ copaśayāṃ ca piṣṭvā saṃsṛjya nidadhāti prāyaścittibhyaḥ

He then takes the (remaining) clay, and having pounded both the (broken) pan and that remainder, and mixed it, he makes a (new) pan in the very same way, without using any formula, quite silently. Having baked it, he pours (the fire) over. The expiation in this case is one of performance only. Having again thrown that potsherd into the (new) pan, and pounded both the (temporary) pan and the remaining clay, and mixed it, he lays it aside for expiation.