The two before Fajr
رَكْعَتَا الْفَجْرِ خَيْرٌ مِنَ الدُّنْيَا وَمَا فِيهَا
Rak'ata-l-fajri khayrun mina-d-dunya wa ma fiha.
"The two rakahs of Fajr are better than the world and everything in it."
Narrated by Aisha. Sahih Muslim 725
A short reflection
The Prophet ﷺ never left them, in travel or at home. Two short rakahs before the obligatory Fajr; he weighed them against the entire dunya and gave them more.