Anas reported God’s Messenger as saying, “When a man marries he has fulfilled half of the religion; so let him fear God regarding the remaining half.” Baihaqi transmitted in <i>Shu'ab al-iman</i>.

وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا تَزَوَّجَ الْعَبْدُ فَقَدِ اسْتَكْمَلَ نِصْفَ الدِّينِ فَلْيَتَّقِ اللَّهَ فِي النِّصْفِ الْبَاقِي»