It is narrated from Mujahid (may Allah have mercy on him) that he had a slave who was called Jarir. He was saying to him: "Accept Islam." So he (the slave) replied: This is how it was said to them, and some people from the Ansar were milk partners with Banu Qurayza, and they used to say to them: Accept Islam. Then Allah, the Mighty and Majestic, revealed this verse: "There is no compulsion in religion" (__QUR_N__).