Bukti-buktinya banyak: menghitung masa kekhalifahannya dengan tiga puluh tahun, yaitu masa kepemimpinan mereka, mengutamakan mereka atas seluruh sahabat Nabi ﷺ lainnya, dan apa yang diriwayatkan oleh Samura bin Jundub, ia berkata: seorang laki-laki berkata: "Wahai Rasulullah ﷺ! Aku melihat seolah-olah sebuah timba turun dari langit. Lalu datanglah Abu Bakar dan mengambilnya, dan ia meminum sedikit darinya. Kemudian datang 'Umar yang mengambilnya dan meminum hingga ia kenyang. Kemudian datang 'Utsman yang mengambilnya dan meminum hingga ia kenyang. Kemudian datang 'Ali yang mengambilnya, lalu timba itu terlepas darinya dan sebagian airnya tertumpah mengenai dirinya." (Diriwayatkan oleh Abu Dawud dan Ahmad)

A--- The proofs are numerous: counting its period with thirty years which is the period of their leadership, preferring them to all other companions of the Prophet (Peace be upon him), and what has been narrated by Samura Ibn Jundub saying: that a man said: “O Allah's Messenger! I saw as if a bucket descended from the sky. Then came Abu Bakr and took it and he drank very few thereof Then, came 'Umar who took it and drank till he got satisfied. Then, came `Uthman who took it and drank till he got satisfied. Then, came `Ali who took it and it was drawn from him and something thereof was spelt over him.” (Abu Dawud and Ahmed)

Selain itu, umat telah sepakat atas keabsahan Khilafah mereka, dan tidak ada yang menentangnya kecuali mereka yang tersesat dan mengikuti bid'ah.

In addition, the Ummah has agreed on their Caliphate and none contests against this but who went astray and adopted Innovations.