It wasnarrated from Abu Ayyub that the Prophet (ﷺ) used to performfourRak'ah before the Zuhr when the sun had passed its zenith, and hedid not separate them with a Taslim. He said, "The gates of heavenareopened when the sun passes its zenith." (JA)
English reference (JA): Vol. 1, Book 5, Hadith 1157 (JA)
Arabic reference (JA): Book 5, Hadith 1212 (JA)