I have observed a Phenomenon among older Eurpoean Jewry ( i.e. Yiddishe mammes and bubbes) not to display pictures of their children or grandchildren ( eineklach) in open areas for fear of ayin hora. ...
I avoid telling my baby's name to other people before the Brit Milah or nomination for a girl. Is there a halakhic source for this? Precedence? Or is it just superstition?
Is there any source for the custom to not buy things for a baby before it is born? I have heard that the reason is due to averting ayin hara, but I would like to know if there is any recorded source ...