The Wahabis, also known as Deobandis or Nasbis in India and Pakistan, follow Abu Sufyan, Muaweyah and Yazeed. All three were the biggest enemies of Islam. While Abu Sufyan spent all his life leading the pagans of Mecca in battles against prophet Muhammad (pbuh&hp), his cursed son Muaweyah spent most of his life fighting Imam Ali (AS), the rightful caliph according to both Shia and Sunni belief.
Realising that he would not be able to stand against the prophet of God, Abu Sufyan pretended to embrace Islam on the day Mecca fell to Muslims and the prophet removed all the idols from the Holy Ka 'ba. The holy prophet forgave all who asked for forgiveness but instead of showing gratitude, Abu Sufyan and his filthy tribe, Banu Umayya, started plotting against Islam. The Umayyads had been rivals of the Hashmiites, the prophet 's tribe for centuries. They could not accept the supremecy God had given to the Hasmiites by sending his messenger from within this tribe. As soon as Imam Ali (AS), the prophet 's cousin and son in law, on strong public demand accepted the office of Calpih , Muaweya bin Abu Sufyan 's hatred for the prophet 's family forced him to rise against the rightful leader of the faithful.
After Imam Ali was martyred, the elder grandson of the prophet, Imam Hasan (AS) was selected as calpih by the Muslims. Muaweyah meanwhile had built his own empire in Syria. Imam Hasan (AS) was also martyred.
Muaweyah instructed the imams of all the mosques within his rule to slander Imam Ali (AS) and the rest of the prophet 's family after Friday prayers. Muaweyah 's descendants continued this practice for more than eighty years until Calpih Omer bin Abdul Aziz put an end to it.
The Muslim prayers, according to all Muslim sects, are not accepted by God until blessings (Darood) are said for the prophet and his holy progeny. Muaweyah appointed his son Yazeed, an evil man who was hated by all Muslims, as his heir apparent. When Yazeed sat on the thrown after Muaweya 's death, his first priority was to get an oath of allegiance from the prophet 's family as he knew that as long as they dont give allegiance, the Muslims would not accept him as caliph.
As a result of Yazeed 's demand, the younger grandson of the prophet, Imam Hussain (AS) left his home town, Madina, along with his family to avoid bloodshed in the holy city. Yazeed had ordered the governor of Madina to kill Imam Hussain if he does 'nt take the oath of allegiance.
Imam Hussain (AS) could never give allegiance to an evil man like Yazeed. Yazeed on the other hand knew very well that if Imam Hussain (AS) was left alive without giving allegiance to him, the Muslims will always be a threat to Yazeed and his rule.
Imam Hussain (AS) was brutally murdered along with 72 men from his family and friends in Kerbala, Iraq. Even his six month-old baby was killed in broad day light by Yazeed 's army when the Imam asked for some water to quench the thirst of the child, who had not received a single drop of water for three days. Yazeed 's army, nine hundred thousand armed men, barred the prophet 's family from the river.
After killing the men from this small but holy caravan, Yazeed 's army set fire to the camps of the prophet 's family. The holy ladies, including the grand daughters of the prophet, along with small children were held as prisoners and were taken to Yazeed 's palace in Damascus, Syria from Kerbala where they were prisoned for over a year in underground cells. The Shia Muslims, also known as Shian e Ali (Followers of Ali) mourn in remembrance, the brutal massacre of Imam Hussain (AS) and his family at the hands of Yazeed 's army in Kerbala. The followers of Yazeed, the present day Wahabis/Deobandis/Nasbis detest the Shias for the love they have for the prophet 's family.
Even Sunni Muslims are hated by the Wahabis as Sunnis also highly respect the prophet 's family and are against Yazeed.
The Sunni scholars consider Wahabis/Deobandis as a non-Muslim cult
source: TEBYAN