Until what age is it appropriate to have a baby sleeping at night in the parents’ room?
A husband and wife are forbidden to have relations in front of a child who is able to speak. From the simple reading of Shulchan Aruch and Poskim it would imply that that the child has to speak full sentences.
Sources:
S”A O”C 240:6 & Aruch Hashulchan O”C 240:11. See however Maddanei Asher Luntzer Brachos 157.
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