Under islam a man may marry a girl of any age, even if she is an infant still breast feeding. A man cannot have intercourse with her prior to the age of NINE (9), however he can do other things such as foreplay, kissing, thighing, rubbing and sodomy IS allowed.
But if he does have intercourse with her prior to age 9, it is not a crime, only an infraction if she is not permanently injured. IF he permanently damages her, he must support her all her life and CANNOT marry her sister (as punishment) BUT she won’t count as one of his four wives, so he can still get four more.
The ‘husband’ can basically rub his dick all over his wife, jack off between her thighs, in her mouth, whatever, even if she is only TWO YEARS OLD.