Mishkat al-Masabih #807
Prayer
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
عَن معَاذ بن عبد الله الْجُهَنِيّ قَالَ: إِنَّ رَجُلًا مِنْ جُهَيْنَةَ أَخْبَرَهُ أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: قَرَأَ فِي الصُّبْح (إِذا زلزلت)
فِي الرَّكْعَتَيْنِ كلتهما فَلَا أَدْرِي أَنَسِيَ أَمْ قَرَأَ ذَلِكَ عَمْدًا. رَوَاهُ أَبُو دَاوُد
Mu'adh b. ‘Abdallah. al-Juhani said that a man of Juhaina told him he had heard God’s Messenger reciting "When the earth is shaken”(Al-Qur’an; 99) in both rak'as of the morning prayer, but did not know whether he had forgotten, or whether he recited it on purpose.
Abu Dawud transmitted it.
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About Mishkat al-Masabih
This hadith is #807 from Mishkat al-Masabih, in the Book of Prayer.