What is the matter that people raise their (Upwards) in prayer. He then said sternly: They should stop doing that, otherwise their sight will be snatched away. (Using translation from Abū Dāʾūd 913)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَا بَالُ أَقْوَامٍ يَرْفَعُونَ أَبْصَارَهُمْ إِلَى السَّمَاءِ فِي صَلَاتِهِمْ فَاشْتَدَّ قَوْلُهُ فِي ذَلِكَ حَتَّى قَالَ لَيَنْتَهُنَّ عَنْ ذَلِكَ أَوْ لَتُخْطَفَنَّ أَبْصَارَهُمْ