The Prophet ﷺ lifted the curtain (and saw that) the people were standing in rows(of prayers) behind Abu Bakr. He said: O people, there remained nothing that gives good tidings from prophethood except a true dream which a Muslim has himself or which another Muslim has for him. I have been prohibited to recite the Qur’an while bowing or prostration. As regards owing, exalt the Lord in it, and as to prostration, make supplication with exertion in it, that is worthy of being accepted. (Using translation from Abū Dāʾūd 876)  

كَشَفَ رَسُولُ اللَّهِ ﷺ السِّتَارَةَ وَالنَّاسُ صُفُوفٌ خَلْفَ أَبِي بَكْرٍ فَقَالَ «يَا أَيُّهَا النَّاسُ إِنَّهُ لَمْ يَبْقَ مِنْ مُبَشِّرَاتِ النُّبُوَّةِ إِلَّا الرُّؤْيَا الصَّالِحَةُ يَرَاهَا الْمُسْلِمُ أَوْ تُرَى لَهُ أَلَا إِنِّي نُهِيتُ أَنْ أَقْرَأَ رَاكِعًا أَوْ سَاجِدًا فَأَمَّا الرُّكُوعُ فَعَظِّمُوا رَبَّكُمْ وَأَمَّا السُّجُودُ فَاجْتَهِدُوا فِي الدُّعَاءِ فَقَمِنٌ أَنْ يُسْتَجَابَ لَكُمْ»  

[Machine] The Messenger of Allah ﷺ said, "I have been prohibited from reciting while in a state of bowing or prostration. As for the bowing, glorify your Lord in it, and as for the prostration, strive in supplication, as it is most likely that you will be answered."  

قَالَ رَسُولُ اللَّهِ ﷺ «إِنِّي نُهِيتُ أَنْ أَقْرَأَ وَأَنَا رَاكِعٌ أَوْ سَاجِدٌ فَأَمَّا الرُّكُوعُ فَعَظِّمُوا فِيهِ الرَّبَّ وَأَمَّا السُّجُودُ فَاجْتَهِدُوا فِي الدُّعَاءِ فَقَمِنٌ أَنْ يُسْتَجَابَ لَكُمْ»