Sayyiduna Jabir (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) set off back, and tranquillity (sakinah) was upon him; he also commanded the people to (keep) calm, and said: "Let my Ummah learn the ways of Hajj from me, for I do not know; perhaps I will not meet them after this year."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9466