Abu Bakr As-Siddiq: The First Caliph

Tabuk was the last expedition of the Prophet (Peace and blessings be upon him) and he asked people to give generously to aid it. Abu Bakr (May Allah be pleased with him) was the only person to give all he had to the cause of Islam. The Prophet (Peace and blessings be upon him) asked him whether he had anything left for his family, and he replied that Allah and His Apostle were enough for them.