What is the ruling on supplicating after prayer, especially collective supplication after the obligatory prayers, and does this fall under the meaning of "supplication at the end of every prayer" mentioned in the hadiths?

It is permissible for a woman observing her iddah (waiting period) to visit her son's wife, provided she adheres to complete modesty (awrah), does not display her adornments (tabarruj) or use cosmetics, and does not spend the night anywhere other than her iddah residence. Visiting a woman in postpartum (nifas) does not affect her newborn. What some believe about harm befalling the newborn due to a menstruating or ritually impure person's visit is a baseless superstition. Continuously engaging in congregational supplication (dua) after the obligatory prayers is not legislated and has no evidence to support it.