Al-Kāfi

Hadith 879
expiationoaths-vowssacrificeimam-aliahl-al-bayt
9- وَبِإِسْنَادِهِ قَالَ سُئِلَ أَمِيرُ الْمُؤْمِنِينَ (عَلَيْهِ السَّلام) هَلْ يُطْعَمُ الْمَسَاكِينُ فِي كَفَّارَةِ الْيَمِينِ لُحُومَ الأضَاحِيِّ فَقَالَ لا لأنَّهُ قُرْبَانٌ للهِ.
9. Through the same chain of narrators as that of the previous Hadith, the following is narrated: “’Amir al-Mu’minin, Ali (a.s.), was asked, ‘Can the Kaffarah (expiation) because of an oath be fed to the destitute from the flesh of the offering animals for al-Hajj?’ He (the Imam) said, ‘No, because it is sacrifice for Allah.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī