لَا صَلَاةَ بَعْدَ صَلَاةِ الْفَجْرِ حَتَّى تَطْلُعَ الشَّمْسُ
Translation: There is no prayer after the Fajr prayer until sunrise.
The post-Fajr prohibition is applied to voluntary prayers in Hanafi reasoning, with a distinction for obligatory makeup outside the severe sunrise interval.