Hadith.3111 - It is narrated from Bukayr ibn A'yan, from his brother Zurara, who said
I said to Abu Abdullah (as): "May Allah (swt) make me your ransom! I have been asking you about Hajj for forty years, and you continue to provide me with answers."
Imam (as) replied: "O Zurara, a House that has been the site of pilgrimage two thousand years before Adam (as) — do you expect its matters to be exhausted in forty years?"