Al-Kāfi

4. Ali ibn Ibrahim has narrated from his father from and Muhammad ibn ‘Isma‘il has narrated from al-Fadl ibn Shadhan from Ibn Abi ‘Umayr from Mu‘awiyah ibn ‘Ammar who has said the following: “I once asked abu ‘Abd Allah (a.s.), about the case of a tree with its roots in non-al- Haram (the sacred area) and its branches in al-Haram (the sacred area). He (the Imam) said, ‘Its roots are prohibited because of its branches.’ I then asked, ‘What if its roots are al-Haram (the sacred area) and its branches in non-al-Haram (the sacred area)?’ He (the Imam) said, ‘Its branches are prohibited because of its roots.’”