Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Perform Hajj before you become unable to perform Hajj." It was asked: What will be the matter with Hajj? He (peace and blessings be upon him) said: "Its Bedouins will sit at the edges of its valleys, and no one will be able to reach the Hajj."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8702