This is further clarified (1) by the fact that the Sunnah prayers (2) associated with the other obligatory prayers consist of two rak‘ahs each. Even the dawn prayer, though itself consisting of two rak‘ahs and occurring when people are least occupied (3), has a Sunnah prayer of two rak‘ahs. Accordingly, these four rak‘ahs before the noon prayer constitute a distinct devotional practice (4), occasioned (5) by midday and the sun’s passing its zenith. ‘Abdullāh ibn Mas‘ūd used to pray eight rak‘ahs after the sun passed its zenith, saying that they were equivalent to the same number of rak‘ahs prayed at night (6). The wisdom behind this—and Allah knows best—is that midday corresponds to midnight: the gates of heaven open after the sun passes its zenith, and the divine descent occurs after midnight. Both are times of nearness and mercy: at one, the gates of heaven open; at the other, the Lord, blessed and exalted, descends to the lowest heaven.
Muslim reports in his Sahīh (7) that Umm Habībah said: I heard the Messenger of Allah (may Allah bless him and grant him peace) say:
“Whoever prays twelve rak‘ahs in a day and night will have a house built for him (8) in Paradise on their account.”
Al-Tirmidhī and al-Nasā’ī (9) add to this report: “Four before the noon prayer, and two rak‘ahs