Haroon al-Abbasi used to tell Imam Moosa Ibn Jafar (a.s.) take Fadak since I wish to return it to you. But he (a.s.) always declined the offer.
Haroon insisted on it upon which Imam (a.s.) said – I will not accept it until it is reinstated completely with all its limits.
Haroon asked – And what are its limits?
Imam (a.s.) – If I define its limits you will never return it.
Haroon – By your grandfather you must define it.
Imam (a.s.) – As for the first limit it is Aden (Yemen). Haroon’s face changed colour.
Haroon asked Imam (a.s.) to continue.
Imam (a.s.) – The second limit is Samarqand (Uzbekistan).
Haroon’s face turned even darker.
Imam (a.s.) – The third limit is Africa.
Haroon’s face turned black. He said – Continue.
Imam (a.s.) – The fourth limit is the sea coast along the peninsula and Armenia.
Haroon – There is nothing left for us.
Imam (a.s.) – I had already told you that if I define its limits you will never return it.
It was then that Haroon decided to kill Imam Moosa Kazim (a.s.).
• Manaaqib Aal-e-Abi Talib (a.s.), vol. 4, p. 320