It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once Abu Jahl said: If I see Muhammad (peace and blessings be upon him) praying near the Ka'bah, I will go to him and crush his neck. The Prophet (peace and blessings be upon him) said: "If he had advanced to do so, the angels would have seized him before the eyes of all. If the Jews had wished for death, they would have died and their abode in Hell would have been shown to them. And if those people who came to challenge the Prophet (peace and blessings be upon him) to a mutual curse (mubahala) had gone out, they would have returned to their homes in such a state that they would have found none of their wealth or family remaining."