It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) addressed the people during the Farewell Pilgrimage; he praised and extolled Allah Almighty and then said: "O people! Learn your rites (of Hajj), for I do not know; perhaps I will not perform Hajj again after this year of mine."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Musa bin Uqbah (may Allah have mercy on him) except Dawud bin Qays (may Allah have mercy on him), none from Dawud except his son Sulayman (may Allah have mercy on him), and none from Sulayman except Ibn Abi Fudayk (may Allah have mercy on him), while al-Munkadiri (may Allah have mercy on him) is alone with this chain."
Hadith Referenceالمعجم الأوسط / باب الألف / 1929
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 14242»