It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When the prayer is established, the gates of heaven are opened and supplication is answered. So whoever finishes the prayer and does not say: 'O Allah, protect me from Hell, admit me to Paradise, and marry me to the wide-eyed houris,' the Fire says: Woe to this man! Was he unable even to ask Allah for protection from Hell? And Paradise says: Woe to this man! Was he unable even to ask Allah for Paradise? And the wide-eyed houris say: Woe to this man! Was he unable even to ask Allah to marry him to us?"
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7465