Bulugh al-MaramChapter 2Hadith 320
Full Sharh — Bulugh al-Maram 320
وَفِيهَا 1 { فَإِنْ كَانَ مَعَكَ قُرْآنٌ فَاقْرَأْ وَإِلَّا فَاحْمَدِ اَللَّهَ , وَكَبِّرْهُ , وهلِّلْهُ } 21 - أي : في رواية .2 - صحيح . رواه أبو داود (861) .
English Translation
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."
Source
Bulugh al-Maram(بلوغ المرام)
The Book of Prayer
Hadith Number
320