The Book of Prayer
Bulugh al-Maram #437
كتاب الصلاة
وَلِلْخَمْسَةِ عَنْهَا: «مَنْ حَافَظَ عَلَى أَرْبَعٍ قَبْلَ اَلظُّهْرِ وَأَرْبَعٍ بَعْدَهَا حَرَّمَهُ اَللَّهُ عَلَى اَلنَّارِ»
And in the narration of al-Khamsah, by her:
“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"
"Whoever prays regularly four Rak'at before and four Rak'at after the Zuhr prayer, Allah will forbid for him (from entering) the Hellfire."
— Bulugh al-Maram, Hadith 437