About Abu Bakr:
Abdullah ibn Abi Quhaafah was a senior companion (Sahabi) and the father-in-law of the Islamic prophet Muhammad. He ruled over the Rashidun Caliphate from 632 to 634 CE, when he became the first Muslim Caliph following Muhammad's death. As caliph, Abu Bakr succeeded to the political and administrative functions previously exercised by Muhammad. He was also commonly known as The Truthful (Arabic: ??????? Al-Siddiq).
There is no harm in patience, and no profit in lamentation. Death is easier to bear (than) that which precedes it, and more severe than that which comes after it. Remember the death of the Apostle of God, and your sorrow will be lessened.Abu Bakr