Analysis of information sources in references of the Wikipedia article "Hadrian" in English language version.
[...] Hadrian's ban on circumcision, allegedly imposed sometime between 128 and 132 CE [...]. The only proof for Hadrian's ban on circumcision is the short note in the Historia Augusta: 'At this time also the Jews began war because they were forbidden to mutilate their genitals (quot vetabantur mutilare genitalia). [...] The historical credibility of this remark is controversial [...] The earliest evidence for circumcision in Roman legislation is an edict by Antoninus Pius (138–161 CE), Hadrian's successor [...] [I]t is not utterly impossible that Hadrian [...] indeed considered circumcision as a 'barbarous mutilation' and tried to prohibit it. [...] However, this proposal cannot be more than a conjecture, and, of course, it does not solve the questions of when Hadrian issued the decree (before or during/after the Bar Kokhba war) and whether it was directed solely against Jews or also against other peoples.