The Messenger of Allah ﷺ used to say: "Whoever prays four rak'ahs before Zuhr and four after, Allah, the Mighty and Sublime, will forbid him from the Fire."
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَقُولُ مَنْ صَلَّى أَرْبَعَ رَكَعَاتٍ قَبْلَ الظُّهْرِ وَأَرْبَعًا بَعْدَهَا حَرَّمَهُ اللَّهُ ﷻ عَلَى النَّارِ