The Holy Prophet Muhammadsaw made a clear prophesy in regards to the progeny of the latter day Messiah. Hesaw stated:
فَيَتَزَوَّجُ وَيُولَدُ لَهُ
Meaning, he will marry and have children (Mishkat al Masabih)
Hadhrat Ahmadas stated:
“The prophecy that the Promised Messiah will be blessed with progeny indicates that God will create from his progeny a man who will succeed him and will defend Islam, as this news has already been given in some of my prophecies” (Haqiqatul Wahi, Ruhani Khazain, Volume 22, Pages 320-326)