Whoever regularly observes four Rak‘ahs before Zhuhr and four after it, Allah will make him forbidden to Hellfire

The Prophet (may Allah's peace and blessings be upon him) gave glad tidings to one who constantly and regularly offers four voluntary Rak‘ahs before the Zhuhr prayer and four voluntary Rak‘ahs after it that Allah will make him forbidden to Hellfire.

1. It is recommended to offer four Rak‘ahs before Zhuhr and four after it regularly.
2. The regular Sunnah prayers offered before the obligatory prayer have several rationales: one of which is getting oneself prepared for worship before starting the obligatory prayer. As for those offered after the obligatory prayer, one of their rationales is to make up for any shortcomings occurring in the obligatory prayers.
3. The regular Sunnah prayers have great benefits, such as increasing good deeds, expiating sins, and raising degrees.
4. The basic rule of Ahl-us-Sunnah regarding the Hadīths of the divine promise, like this Hadīth: They are to be interpreted as applying to those who die on Tawhīd (monotheism). The intended meaning is that they will not remain in Hellfire forever because the sinner from among the monotheists is deserving of punishment but will not be eternally condemned to Hellfire if he is punished.

سنن أبي داود (2/ 448) (1269). سنن الترمذي (1/ 452) (428). سنن النسائي (3/ 265) (1816). سنن ابن ماجه (2/ 238) (1160). مسند أحمد (44/ 358) (26772). سبل السلام شرح بلوغ المرام، لمحمد الصنعاني (1/ 336). توضيح الأحكام مِن بلوغ المرام، لعبد الله البسام (2/ 381).