Cousins of opposite Gender Playing Together

If the cousins are male and female and are young and
have not reached the age where they could feel desire and temptation, then there is no
harm in their playing together. If they are older, then it is forbidden because cousins
are not Mahrams (close relatives whom one is permanently forbidden to marry and with whom
the rules of hijaab and segregation are relaxed). Cousins are ‘Ajaanib or strangers
(non-Mahrams) to the daughters of their paternal uncles (father’s brothers) and
maternal uncles (mother’s brothers). And Allaah knows best.