*A Great Conqueror of the Islamic World*
 *Conqueror of Rome and Syria, Unsheathed Sword*
 *A Sword from the Swords of Allah*
 *Hazrat Syedna Khalid bin Waleed (may Allah be pleased with him)*
18th Ramadan al-Mubarak, 21 Hijri

Day of Death of Syedna Khalid bin Waleed (may Allah be pleased with him) 
Sword of Allah 

Khalid bin Waleed was born in 592 AD in Mecca to Waleed bin Mughira, the chief of the Banu Makhzoom, a branch of the Quraish tribe. The Banu Makhzoom were known for warfare.

Initially, he was among the opponents of the Muslims and played a key role in turning the tide of the Battle of Uhud against the Muslims. After the Treaty of Hudaybiyyah, he came to Medina and presented himself to Hazrat Muhammad (peace and blessings of Allah be upon him), embraced Islam, and dedicated the rest of his life to Islam.

Waqidi narrates
 that he accepted Islam on the 1st of Safar, 8 Hijri and participated in the Battle of Mu'tah. On that day, due to not being an emir, he became an emir and fought fiercely that day, the likes of which have not been seen, and 9 swords broke in his hand. Hazrat Muhammad (peace and blessings of Allah be upon him) gave him the title of Saifullah, meaning the Sword of Allah, for his unparalleled bravery in the Battle of Mu'tah.

Khalid bin Waleed participated in about 125 small and large battles and was never defeated in any of them. He was a born warrior. The areas he conquered for the Arabs are still with them. While the areas conquered by other global conquerors like Napoleon, Genghis Khan, Timur, and Hitler were taken away from them during their lifetime or later.

The names of his famous battles are 

Ghazwa-e-Uhad
Fatah Mecca
Fatah Taif
Battle of Mutah
Battle of Dumat al-Jandal
Battle of Yarmouk
Battle of Yamama
Battle of Ajnadayn
Fatah Halab

Battle of Yamama 
Hazrat Abu Bakr Siddiq (may Allah be pleased with him) fought against Musaylimah al-Kadhdhab, which was led by Hazrat Khalid bin Waleed (may Allah be pleased with him).
This battle for the finality of prophethood was fought in Wadi Shuaib al-Dam (al-Aqrabah) in al-Jubaila, in which rivers of blood flowed.
In this, 1200 Muslims were martyred and 27000 infidels went to hell in this battle. There were 600 Sahaba Ikram in this battle who were complete Hafiz-e-Quran.
When victory was not achieved for a few days in the Battle of Yamama and the slogan of Takbir was also being raised from the opposing side, meaning it was difficult to identify the hypocrites, Syedna Khalid bin Waleed (may Allah be pleased with him) issued a command to the Mujahideen
 Raise the slogan of Muhammad Rasool Allah

Infidels also used to recite Takbir in the Yamama war
The difference between the infidel and the believer was the slogan Muhammad Rasool Allah

A common perception had developed among Muslims that Khalid bin Waleed was a guarantee of success in every battle. On this, the second Caliph, Umar Farooq, removed him from the rank of commander, saying that victory comes with the help of Allah Almighty and obedience to the emir was an important part of Khalid bin Waleed's character. He accepted it happily.

Khalid bin Waleed regretted a lot before his death that he was giving his life on the bed instead of the battlefield. He passed away in the city of Homs in Syria on 18th Ramadan al-Mubarak, 21 Hijri, 642 AD. His grave is part of the Jamia Khalid bin Waleed Mosque. On his death, he bequeathed the distribution of his property to the Caliph of the time, Umar Farooq.

Khalid bin Waleed's message:
 If death is not written, then death itself protects life. When death is destined, life runs and clings to death, no one can live more than life and no one can die before death. Convey this message of mine to the coward of the world that if death was written in the field of Jihad, then this Khalid bin Waleed would not have died on the bed..