CHĀNDOGYA UPANISHAD · 4.17.4

तद् यद्य् ऋक्तो रिष्येद् भूः स्वाहेति गार्हपत्ये जुहुयात् ।
ऋचाम् एव तद्रसेनर्चां वीर्येणर्चां यज्ञस्य विरिष्टं संदधाति ॥

tad yady ṛkto riṣyed bhūḥ svāheti gārhapatye juhuyāt ।
ṛcām eva tadrasenarcāṃ vīryeṇarcāṃ yajñasya viriṣṭaṃ saṃdadhāti ॥

If the sacrifice is injured from the Rig-Veda side, let him offer a libation in the Gârhapatya fire, saying, Bhûh, Svâha! Thus does he bind together and heal, by means of the essence and the power of the Rik verses themselves, whatever break the Rik sacrifice may have suffered.

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)