Harith bin Suwayd said: I heard Sayyiduna Ali (may Allah be pleased with him) saying: "Perform Hajj before (the time comes) when you will not be able to perform Hajj. It is as if I am looking at an Abyssinian with weak shins, a pickaxe in his hand, demolishing the Ka'bah stone by stone." I said: Are you saying this from your own opinion, or did you hear it from the Messenger of Allah (peace and blessings be upon him)? He said: By the One who split the seed and brought forth the shoot! I heard this from your Prophet (peace and blessings be upon him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8698