Here's some info on the Islamic practice (Wiki again)
The Quran itself does not mention circumcision explicitly in any verse.[1][4][2][7] In the time of the Islamic prophet Muhammad, both male and female circumcision were carried out by Pagan Arabian tribes,[1][2][7] and male circumcision was performed by the Jewish tribes of Arabia for religious reasons.[2][10][page needed] This has also been attested by the classical Muslim scholar al-Jāḥiẓ,[7][11] as well as by the Roman-Jewish historian Flavius Josephus.[2][7][12]
According to some ḥadīth reports, Muhammad was born without a foreskin,[1][2][7] while others maintain that his grandfather, ʿAbd al-Muṭṭalib, circumcised him when he was seven days old.[6][13] Some ḥadīth report that Heraclius, Emperor of the Byzantine Empire, had referred to Muhammad as "the king of the circumcised".[1]
Some ḥadīth reports mention circumcision in a list of practices known as fitra[1] (acts considered to be of a refined person). Abū Hurayra, one of the companions of Muhammad, was quoted saying: "five things are fitra: circumcision, shaving pubic hair with a razor, trimming the mustache, paring one's nails and plucking the hair from one's armpits" (reported in the ḥadīth of Sahih al-Bukhari and Sahih Muslim).[1] However, there are other ḥadīth which do not name circumcision as part of the characteristics of fitra.[2] Hence, the different hadiths do not agree on whether circumcision is part of fitra or not.[2]
Muhammad's wife Aisha supposedly quoted Muhammad as saying that "if the two circumcised parts have been in touch with one another, ghusl [ritual purification] is necessary."[1][7][14][15] According to some other ḥadīth reports, Muhammad supposedly circumcised his grandsons, Ḥasan ibn ʿAlī and Ḥusayn ibn ʿAlī, on the seventh day after their birth.[16] Sahih al-Bukhari and Sahih Muslim also quote Muhammad saying that Abraham performed his own circumcision at the age of eighty.[2] It is also reported by Abū Dāwūd and Aḥmad ibn Ḥanbal that Muhammad stated that circumcision was a "law for men and a preservation of honor for women".[1]
According to historians of religion and scholars of religious studies, the Islamic tradition of circumcision was derived from the pagan practices and rituals of pre-Islamic Arabia.[7] Circumcision was introduced to many lands of the Middle East and North Africa for the first time through Islam itself following the early Muslim conquests under the Rāshidūn Caliphate, whose commanders were the companions and contemporaries of Muhammad. For example, the Persians practiced neither male nor female circumcision before the advent of Islam.[7] Post-Islamic converts such as Afshin were found guilty in trials of remaining uncircumcised.[7][17]
Islamic scholars have diverse opinions on the obligatory nature of male circumcision, with some considering it mandatory (wājib), while others view it as only being highly recommended (sunnah).[18] Shīʿīte traditions, however, such as those practised in Iran, have the most stringent requirements for male circumcision, since it is seen as a ritual of purification akin to Christian baptism rather than an initiation to adulthood.[19]
Sunnī Islam
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In the Sunnī branch of Islam, the four schools of Islamic jurisprudence have different opinions and attitudes towards circumcision:[1] some state that it is recommendable, others that it is permissible but not binding, while others regard it as a legal obligation.[2] Amongst Muslim legal scholars (Ulama), there are differing opinions about the compulsory or non-obligatory status of circumcision in accordance with Islamic law (sharīʿa).[4][2] The Shāfiʿī school of Ḥanafī jurists also consider circumcision to be recommendable exclusively for Muslim males on the seventh day after birth.[2] Some Salafis have argued that circumcision is required in Islam to provide ritual cleanliness based on the covenant with Abraham, while the purpose of female circumcision for Muslim women is to "regulate" and reduce their sexual desires.[20]
Shīa Islam
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Within the Shīʿīte branch of Islam, some but not all Shīʿīte denominations regard the practice as obligatory. They rely on sayings that come from classical Shīʿīte Muslim scholars.[21] In one narration Muhammad was asked if an uncircumcised man could go to pilgrimage. He answered "not as long as he is not circumcised." They quote ʿAlī ibn Abī Ṭālib as saying: "If a man becomes Muslim, he must submit to circumcision even if he is 80 years old."[22] Another narration from Jaʿfar al-Ṣādiq, the 6th Shīʿīte Imam, says: "Circumcise your sons when they are seven days old as it is cleaner (athar) and the flesh grows faster and because the earth hates the urine of the uncircumcised."[23] It is also believed that the urine of the uncircumcised is impure, while if one prays with unclean genitals their prayer may not be considered as acceptable, even of those who have been circumcised, meaning that it may have to be repeated again at a time when the believer has purified themselves and removed the impurity. Another hadith attributed to Muhammad states: "the earth cries out to God in anguish because of the urine of the uncircumcised", and that "the earth becomes defiled from the urine of the uncircumcised for forty days."[24]
Alevism
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While most Alevis living in Turkey have been circumcised due to social pressure, the new generation of modern Alevis reject the practice viewing it as unnecessary and foreign to them.[25][26]
Procedure
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Traditional procession after the Islamic circumcision ceremony of a child in the Dutch East Indies, 1915–1918
Circumcisions are usually carried out in health facilities or hospitals, and performed by trained medical practitioners.[3] The circumciser can be either male or female,[3] and is not required to be a Muslim but must be medically trained.[6] There is no fixed age for circumcision in Islam,[2][3][4][7] and the age when boys get circumcised, and the procedures used, tends to change across countries, cultures, families, and time.[3] In some Muslim-majority countries, circumcision is performed on Muslim boys after they have learned to recite the whole Quran from start to finish.[6]
Time of circumcision
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Islamic scriptures do not fix a particular time for circumcision.[2][3][4][7] Therefore, there is a wide variation in practice among Muslim communities around the world, with children often being circumcised in late childhood or early adolescence,[3] depending on family, region, and country.[3] The preferred age is usually seven, although some Muslims are circumcised as early as on the seventh day after birth and as late as at the commencement of puberty.[2][4][6]
In the Western Balkans, circumcision of Muslim boys is performed mostly from age three to seven.[27]
Imo, this should be easier to regulate as the requirement the person must be a baby or child is not so strict. There's no requirement it has to be done in a particular ceremonial way which also makes it easier, at least in theory.