Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "Everyone who gave the pledge under the tree will enter Paradise, except that the case of the man with the red camel is different."
Al-Bazzar recorded it, and its narrators are the narrators of the Sahih, except Khidash bin Ayyash, whose case is different, and he is thiqah (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14949