Musnad Ahmad

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once Abu Talib fell ill. Some people from the Quraysh came to visit him during his illness, and the Prophet (peace and blessings be upon him) also came to visit him. There was an empty place at Abu Talib’s bedside where a man could sit, and Abu Jahl came and sat there. The people of Quraysh said to Abu Talib, “Your nephew finds fault with our gods.” Abu Talib said, “What complaint do your people have against you?” The Prophet (peace and blessings be upon him) said, “Dear uncle! I want to bring them to a word, because of which all of Arabia will obey them and all of non-Arabs will pay them tax.” They asked, “What is that word?” He said, “«لَا إِلٰهَ إِلَّا اللّٰهُ».” Hearing this, they stood up saying, “Does he want to make all the gods into one god?” Upon this, Surah Sad was revealed, and the Prophet (peace and blessings be upon him) recited it until he reached «﴿إِنَّ هَذَا لَشَيْءٌ عُجَابٌ﴾».