Commentary for Sanhedrin 32:3

א"ר יצחק בריה דרב אדא ואמרי לה א"ר יצחק בר אבודימי מאי קרא (תהלים נז, ט) עורה כבודי עורה הנבל וכנור אעירה שחר:

the Kerethites and Pelethites.<span class="x" onmousemove="('comment',' I Chron, XVIII, 17, and II Sam. XX, 23. Since Abiathar is mentioned in the previous verse after Benaiah, it follows that it is he who is referred to by Kerethites and Pelethites. [According to the text adopted by R. Tam (v. Tosaf.), the verse 'Benaiah the son of Jehoiada etc.' follows the word 'Sanhedrin'. The explanation of Kerethites and Pelethites refers accordingly to the Sanhedrin.] ');">⁵</span> And why were they<span class="x" onmousemove="('comment',' The Urim and Tummim. ');">⁶</span>

Rashi on Sanhedrin