Question:

Does Al-Karaki prove the disbelief (kufr) of Abu Bakr and Umar through Fadak?

Answer:

Al-Karaki Al-Amili writes: “Know that the rejection of the demand of Fatimah (for Fadak) and the testimony of Ali, Al-Hasan and Al-Husain (a.), which came from Abu Bakr and Umar, proved the disbelief of the two and that they did not pay attention to the testimony of God and His Messenger about their truthfulness.” [Nafahat-ul-Lahut, page 78]

قال المحقق الكركي العاملي رحمه الله: واعلم أن ما وقع من أبي بكر وعمر في رد دعوى فا‏طمة (في مسألة فدك) وشهادة علي والحسن والحسين عليهم السلام دال على كفرهما وإنهما لم ينظرا إلى شهادة الله ورسوله بصدقهم