Yahya related to me from Malik that Yahya ibn Said heard Muhammadibn Yahya ibn Habban mentioning that a certain man passed Abu Dharr atar-Rabadha (which was about 30 miles from Madina) and Abu Dharr askedhim, "Where are you heading to?" and he replied, "I am intending to dohajj." Abu Dharr questioned, "Has anything else brought you out?" andhe said, "No," so Abu Dharr said "Resume what you are doingwholeheartedly."The man related, "I went on till I came toMakka and I stayed as long as Allah willed. Suddenly, one time, I waswith a crowd of people thronging about a man and I pushed through thepeople to him and it was the old man that I had come across at ar-Rabadha. When he saw me, he recognized me and said, 'Ah, you have donewhat I told you.' "
USC-MSA web (English) reference: Book 20, Hadith 261
Arabic reference: Book 20, Hadith 958