Hadith.3112 - Imam Jafar ibn Muhammad Al-Sadiq (as) said:
"The valleys of the Haram (sanctuary) flow into the Hil (non-sanctuary area), but the valleys of the Hil do not flow into the Haram."
It is also narrated from Abu Hanifah al-Nu'man ibn Thabit that he said
"If it were not for Ja'far ibn Muhammad (as), the people would not have known the rituals of their Hajj."