Islamic law forbids non-Muslims to preach any non-Muslim religion among Muslims, on pain of death (cf. Reliance of the Traveller o11.10).
The death penalty for apostasy is also part of Islamic law. It’s based on the Qur’an: “They wish you would disbelieve as they disbelieved so you would be alike. So do not take from among them allies until they emigrate for the cause of Allah. But if they turn away, then seize them and kill them wherever you find them and take not from among them any ally or helper.” (Qur’an 4:89)
A Sunni hadith depicts Muhammad saying: “Whoever changed his Islamic religion, then kill him” (Bukhari 9.84.57). This is not just a Sunni idea; the death penalty for apostasy is part of Islamic law according to all the schools of Islamic jurisprudence.
This is still the position of all the schools of Islamic jurisprudence, both Sunni and Shi’ite. Sheikh Yusuf al-Qaradawi, the most renowned and prominent Muslim cleric in the world, has stated: “The Muslim jurists are unanimous that apostates must be punished, yet they differ as to determining the kind of punishment to be inflicted upon them. The majority of them, including the four main schools of jurisprudence (Hanafi, Maliki, Shafi’i, and Hanbali) as well as the other four schools of jurisprudence (the four Shiite schools of Az-Zaidiyyah, Al-Ithna-‘ashriyyah, Al-Ja’fariyyah, and Az-Zaheriyyah) agree that apostates must be executed.”
Qaradawi also once famously said: “If they had gotten rid of the apostasy punishment, Islam wouldn’t exist today.”
“2 Christians drowned in retaliation for evangelizing Muslims near L. Kyoga,” by Aaron Sseruyigo, Ug Christian News, August 2, 2020:
Police in Namuseru village, Gadumire Sub-County in Kaliro District have arrested three suspects with offenses related to the torture and drowning of a pastor and Church member on account of evangelizing Muslims on Lake Nakuwa, a tributary of Lake Kyoga.
Officers identified the suspects as Sharifu Ngugo, Hassan Mwidu Gulumaire and Jafari Kadisi of Lugonyola village and took them to the Kaliro central police station….
The victims were identified as Pastor Peter Kyakulaga of Church of Christ and parishioner Tuule Mumbya….
The last warning came on June 21, a day before they beat and drowned Pastor Peter Kyakulaga and Tuule Mumbya in the lake.
“We have discovered that your mission is not to fish but to hold Christian meetings and then convert Muslims to Christianity,” one of the Muslims had reportedly told the Christians on June 21, according to the relative. “We are not going to take this mission of yours lightly. This is our last warning to you.”…