The Prophet (ﷺ) never missed four rak`at before the Zuhr prayer and two rak`at before the Fajr prayer.
Sahih al-Bukhari Book 19, Hadith 59
← Previous Hadith I remember ten Rakat of Nawafil from the Prophet, two Rakat before the Zuhr prayer and two after it; two Rakat after Maghrib prayer in his house, and two Rakat after 'Isha' prayer in his house, and two Rakat before the Fajr prayer and at that time nobody would enter the house of the Prophet.

Hafsa told me that the Prophet (ﷺ) used to offer two Rakat after the call maker had made the Adhan and the day had dawned.

Sahih al-Bukhari Book 19, Hadith 58 Next Hadith → The Prophet (ﷺ) said, "Pray before the Maghrib (compulsory) prayer." He (said it thrice) and in the third time, he said, "Whoever wants to offer it can do so." He said so because he did not like the people to take it as a tradition.

Sahih al-Bukhari Book 19, Hadith 60