"The Messenger of Allah ﷺ turned to face us when he stood up to pray, before he said Takbir, and said: 'Make your rows straight and fill the gaps, for I can see you from behind my back."'  

أَقْبَلَ عَلَيْنَا رَسُولُ اللَّهِ ﷺ بِوَجْهِهِ حِينَ قَامَ إِلَى الصَّلاَةِ قَبْلَ أَنْ يُكَبِّرَ فَقَالَ أَقِيمُوا صُفُوفَكُمْ وَتَرَاصُّوا فَإِنِّي أَرَاكُمْ مِنْ وَرَاءِ ظَهْرِي  

"We were with the Messenger of Allah ﷺ when some of the people said: 'Why do you not stop with us to rest awhile, 0 Messenger of Allah ﷺ?' He said: 'I am afraid that you will sleep and miss the prayer.' Bilal said:'I will wake you up.' So they lay down and slept, and Bilal leaned back on his mount. Then the Messenger of Allah ﷺ woke up when the sun had already started to rise, and he said: '0 Bilal, what about what you told us?' He said: 'I have never slept like that before.' The Messenger of Allah ﷺ said: 'Allah, the Mighty and Sublime, takes your souls when He wills and sends them back when He wills.' Stand up 0 Bilal and call the people to prayer.' Then Bilal stood up and & called the Adhan, and they performed Wudu' - that is, when the sun had risen (fully) - "then he stood and lead them in prayer."  

كُنَّا مَعَ رَسُولِ اللَّهِ ﷺ إِذْ قَالَ بَعْضُ الْقَوْمِ لَوْ عَرَّسْتَ بِنَا يَا رَسُولَ اللَّهِ قَالَ إِنِّي أَخَافُ أَنْ تَنَامُوا عَنِ الصَّلاَةِ قَالَ بِلاَلٌ أَنَا أَحْفَظُكُمْ فَاضْطَجَعُوا فَنَامُوا وَأَسْنَدَ بِلاَلٌ ظَهْرَهُ إِلَى رَاحِلَتِهِ فَاسْتَيْقَظَ رَسُولُ اللَّهِ ﷺ وَقَدْ طَلَعَ حَاجِبُ الشَّمْسِ فَقَالَ يَا بِلاَلُ أَيْنَ مَا قُلْتَ قَالَ مَا أُلْقِيَتْ عَلَىَّ نَوْمَةٌ مِثْلُهَا قَطُّ قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ اللَّهَ ﷻ قَبَضَ أَرْوَاحَكُمْ حِينَ شَاءَ فَرَدَّهَا حِينَ شَاءَ قُمْ يَا بِلاَلُ فَآذِنِ النَّاسَ بِالصَّلاَةِ فَقَامَ بِلاَلٌ فَأَذَّنَ فَتَوَضَّئُوا يَعْنِي حِينَ ارْتَفَعَتِ الشَّمْسُ ثُمَّ قَامَ فَصَلَّى بِهِمْ