女大当嫁 nǚdà-dāngjià
[girl should be married upon reaching womanhood] 谓女子大了终须出嫁,不能久留于家
《水浒后传》第三九回:“男大当婚,女大当嫁,理之当然。兄长之举,真为两全其美。”
越剧《梁山伯与祝英台》第七场:“ 英台 ,为父也何尝捨得你离开膝下,怎奈女大当嫁。”