Yosef Karo

“ We don't circumcise the third one until he is grown up and reached his full strength because he might die. This is the law if a man had a son and he died from the circumcision, he had another who died from the circumcision we don't circumcise the third one whether they were from one wife or from two. ”

“ You should check very closely by hands and look with your eyes but should not probe with metal that he should not לעייק and you should see and be very careful that if you circumcise him and you should wait a long time and don't suspect the eigth day so that he won't come to danger.
ה A baby that died before his eigth day you circumcise him before burial with a reed of a knife. You don't make a blessin on the circumcision but you give him a name to the boy so that Hashem will have mercy and that he will be resurected at the end of days. ”