وَالْقِرَاءَةُ وَاجِبَةٌ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ، وَهُوَ مُخَيَّرٌ فِي الْأُخْرَيَيْنِ: إِنْ شَاءَ قَرَأَ الْفَاتِحَةَ، وَإِنْ شَاءَ سَكَتَ، وَإِنْ شَاءَ سَبَّحَ.
Translation: Recitation is wajib in the first two rakahs, while in the last two one has a choice: recite al-Fatihah, remain silent or say tasbih.
This passage refers to the later two rakahs of a four-rakah fard prayer, not to the final two rakahs of a nafl prayer.
Within the Hanafi school, reciting al-Fatihah in these last two fard rakahs remains the Sunnah practice, even though their obligatory recitation status differs from the first two.