I'm not Jewish, so please forgive me if my question sounds ignorant.
I was researching the practice of Kaparot when I came across the following website:
Indeed, even when Maran [Rabbeinu Ovadia Yosef] zt”l served as the head of all Batei Din in Egypt, he would make sure to go to where the Kaparot were being held as well as to the place where a similar custom was observed in Egypt on the Shavuot holiday using geese. Maran would walk around among the slaughterers and check their knives and watch them carefully so that they would be careful with their work and not, G-d-forbid, feed non-kosher to fellow Jews. There were several times where he encountered actual danger to his life because of his multiple comments and criticism of slaughterers and butchers in the city; indeed, there were three attempts made on Maran zt”l’s life and he was saved in a miraculous manner each time.
Having never heard of this particular custom, I tried googling it, but I was unable to find any other references to it. What exactly is it, and where can I find more information about it?