Umayyah ibn Khalaf ibn Safwan was a Meccan Arab, a leading member of the Quraish and head of the of Bani Jumah. He was an opponent of the Muslims led by Muhammad and is best known as the master of Bilal ibn Ribah, a slave he tortured for converting to Islam.
Other transliterations of the name in include Umayya, Umaiiya and Umaiya.
Kuniyat: Abu Safwan
Nisbah: ‘Umaiyah ibn Khalaf ibn Habib ibn Wahb ibn Hudhafah ibn Jumah
His son, Safwan ibn Umayah, became a Muslim after the conquest of Mecca, another one, named 'Ali, was killed at Badr.
Brothers: Wahb and Ubayy
Grandson: Abdullah ibn Safwan.
Umayyah was involved in the pagan religious ceremonies of Mecca, where he distributed perfume in the square of the Kaaba.
After Muhammad began to preach against idolatry, Umayyah became a staunch opponent of the new teaching.
His most notable action in this regard was that he subjected his slave Bilal ibn Ribah to torture for having adopted Islam. Bilal was made to lie down on hot burning desert sand and had a heavy stone put on his chest which made breathing difficult for him. Since he still refused to denounce Islam, a heavy person was to jump on the stone. Bilal used to repeat "Ahad! Ahad! (One God! One God!) .
Abu Bakr (Abdullah ibn Abi Quhafa) (Arabic: عبد الله بن أبي قحافة, Transliteration: ʿAbd Allāh ibn Abī Quḥāfah, c. 573 CE - 634 CE) also known as Abū Bakr as-Șiddīq (Arabic: أبو بكر الصديق) was a senior companion (Sahabi) and the father-in-law of the Islamic prophet Muhammad. He ruled over the Rashidun Caliphate from 632–634 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, since the religious function and authority of prophethood ended with Muhammad's death according to Islam. He was called Al-Siddiq (The Truthful) and was known by that title among later generations of Muslims.
As a young man, Abu Bakr became a cloth merchant and he traveled extensively in Arabia and neighboring lands in the Middle East, through which he gained both wealth and experience. He eventually came to be recognized as the chief of his clan. On his return from a business trip to Yemen, he was informed that in his absence Muhammad had openly declared his prophethood. Not long after, Abu Bakr accepted Islam and was the first person outside the family of Muhammad to openly become a Muslim. He was instrumental in the conversion of many people to the Islamic faith and early in 623, Abu Bakr's daughter Aisha was married to Muhammad, strengthening the ties between the two men.