`Uthman bin `Affan, may Allah be pleased with him, the Dhun Nurayn the only Sahabi who was married to two daughters of Messenger of Allah (saws) was the third rightly Caliph and stands third in virtues after Abu Bakar and Umar bin Khattab (May Allah be pleased with them all). He spent large amounts and tremendous wealth on this battle (Tabuk).
Abdullah bin Imam Ahmad bin Hanbal recorded that `Abdur-Rahman bin Khabbab As-Sulami said:
The Messenger of Allah صلى الله عليه وسلم gave a speech in which he encouraged spending on the army of distress (for Tabuk). Uthman bin `Affan, may Allah be pleased with him said; `I will give one hundred camels with their saddles and supplies.’ Then he exhorted them some more. So `Uthman رضي الله عنه said; `I will give one hundred more camels with their saddles and supplies.’ Then he descended one step of the Minbar and exhorted them some more. So `Uthman bin `Affan said; `I will give one hundred more camels with their saddles and supplies.’ Then I saw Allah’s Messenger with his hand moving like this – and `Abdus-Samad’s (one of the narrators’ ) hand went out like one in amazement – he said: It does not matter what `Uthman does after.
It is also recorded in the Musnad that `Abdur-Rahman bin Samurah said: