Assalamu alaikum warahmatullahi wabarakatuh,

Want to ask that if guy was born in 1987 and girl was born in 1981 and they want to marry .
Do islam allow a guy to marry a 6 years elder girl.
Its going to or they can marry.

That would be ILLEGAL..

Please explain how its illegal...

You ORIGINALLY posted that the girl was 7 YEARS OLD not that there was a 7 year AGE GAP.

Do you know understand the confusion tat you have caused?

I'm sorry for that.
My question was do a guy can marry 6-7 years elder girl.