I’m not sure. The site doesn’t give rule 217, it just makes reference to it.
This ex-Muslim shares some interesting information about flatulence in Islam:
youtube.com/watch?v=zvGUzcpud6w
Satan Farts at Allah’s Prayer Call
There are a number of ahadith, which tell us that when Azan is announced Satan farts. Here are few samples:
When Azan is pronounced, Satan takes to heel and passes wind with noise…(Sahih Bukhari, 1.11.582)
When Azan is called Satan runs back breaking the wind so that he cannot hear the call, and when the call is over he comes back…(Sahih Muslims, 4.1161)
When Satan hears the Azan he runs away 36 miles from Medina…(Sahih Muslim, 4.0751)
When Satan hears Azan, he farts…(Sunaan Nasai, 2.1256)
When the call to prayer is made Satan retreats, passing wind; when the Azan is finished then Satan comes back…(Malik’s Muwatta, 3.1.6)
islam-watch.org/AbulKasem/IslamicVoodoos/Part12.htm
The attention to detail in Islam, for even the minutest events in a Muslim’s day, is striking:
“Farting is problematic in Islam. During prayer, a worshipper must not fart. Sahih Bukhari (1.4.137) writes that Allah will not accept a Muslim’s prayer if he/she passes wind during the ritual. The exception occurs if the worshipper farts silently, or the fart does not smell. In such a case, he/she may continue with the prayer (ibid, 1.4.139). Sunaan Nasai (1.162) writes that if you fart during a prayer you must redo ablution. Sahih Bukhari (9.86.86) says that for a “farter” Allah will not accept his/her prayer until he/she performs another ablution.”
scribd.com/doc/1503931/Prayer-Recitation-of-Quran-and-Ablution-or-Bath