So far marriages are concerned, just use your discretion but be sure that marriage does not become a farce. It must be serious. So far age is considered, generally the girl should not be older than the boy but in special case you can use your discrimination. Sometimes it so happens that the girl is older than the boy. In India also sometimes it so happens that the girl is older than the boy in some provinces. So you can use your discrimination and do the needful.
Letter to Karandhara, 9 October, 1971