The murderer of Umar gets a shrine! Tomb of Pirouz Nahavandi is located in Kashan, Iran

In the Hijri year 23, whilst
Umar had just begun leading the Fajr (morning) prayer in Al-Masjid an-Nabawi, Pirouz had hidden the dagger in his robe, the grip of which was in the middle, and hid himself in a corner of the mosque. Shorty after Umar had begun the prayer, Pirūz leaped upon him and stabbed him six times (only three times, according to Ibn Sa'd), this was five times in the stomach and once in the naval which proved fatal (other reports also make a mention of being stabbed in the shoulder). Pirūz made his way out of the mosque, wounding thirteen men who tried to stand in his way [8] Six to nine of the men later died as a result of Pirouz's lethality.
Today, the modern day Shia venerate Abu Lulu, and they call him ?Baba Shuja-e-din?
which can be translated as ?Honored Defender of Religion.? These Shia have a shrine
erected for this murderer, located in the Iranian city of Kashan called the Abu Lulu
Mausoleum wherein he is buried. The Shia travel from far distances to pray inside this
shrine, and many of the Shia fast on the day that Umar was killed, and even pass out
sweets. Feroz Abu Lulu is one of the venerated founding figures of Shia ideology; the
same people who conspired to kill Umar were the ones who planted the seeds of the
Shia movement.

The Sayyida Zainab mosque south of Damascus is
a popular pilgrimage site.The mosque, rebuilt by the Syrian regime's ally Iran in 1990, rests on the supposed
burial place of Zainab, the Prophet's granddaughter and daughter of the Caliph Ali,
who is highly revered by the Shia.
The Messengers will say, "Lord, my people had abandoned this Quran."
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God bless