Not graded
Bulugh al-Maram 268d
وَفِيهَا 1 { فَإِنْ كَانَ مَعَكَ قُرْآنٌ فَاقْرَأْ وَإِلَّا فَاحْمَدِ اَللَّهَ , وَكَبِّرْهُ , وهلِّلْهُ } 2
1 - أي : في رواية .
2 - صحيح . رواه أبو داود (861) .
It is also mentionmed in the same Hadith, "If you know any portion of the Qur'an, read it or else say:
Alhamdu lillah, Allahu Akbar and La ilaha ill-Allah."
Cited in Bulugh al-Maram (No. 268d).