It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) (the narrator said: I know only that he said this) that the Prophet (peace and blessings be upon him) said: "Hajj is (standing at) Arafat."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Khusayf except Abd al-Salam bin Harb, and it is not narrated from Ibn Abbas (may Allah be pleased with them both) except with this chain."
Hadith Referenceالمعجم الأوسط / باب الميم / 5844
Hadith Gradingمحدثین:فيه خصيف، مختلف فيه
Hadith Takhrij«قال الهيثمي: وفيه خصيف وثقه ابن معين وغيره وضعفه أحمد وغيره «مجمع الزوائد ومنبع الفوائد، ج 3، ص 251»»