كتاب الصلاة
2  
The Book of Prayer
Bulugh al-Maram 359
And in the narration of al-Khamsah, by her [Umm Habibah (RA)]:
"Whoever prays regularly four Rak'at before and four Rak'at after the Zuhr prayer, Allah will forbid for him (from entering) the Hellfire."
وَلِلْخَمْسَةِ عَنْهَا : { مَنْ حَافَظَ عَلَى أَرْبَعٍ قَبْلَ اَلظُّهْرِ وَأَرْبَعٍ بَعْدَهَا حَرَّمَهُ اَللَّهُ عَلَى اَلنَّارِ } 1
Reference : Bulugh al-Maram 359
In-book reference : Book 2, Hadith 359
English translation : Book 2, Hadith 354
Hadith Text
Reference