Musannaf Ibn Abi Shaybah 32149 — What of the Quran was revealed

Ibn Awn said that some people recited this verse before Imam al-Sha'bi: "And a witness from the Children of Israel has already testified to the like of this speech." [Al-Ahqaf: 10] It was said: "The witness meant here is Sayyiduna Abdullah bin Salam (may Allah be pleased with him)." He said: "How can it be Ibn Salam, when this surah is Makkan?!"