The Prophet ﷺ was ordered (by Allah) to prostrate on seven parts and not to tuck up the clothes or hair (while praying). Those parts are: the forehead (along with the tip of nose), both hands, both knees, and (toes of) both feet.  

عَنِ ابْنِ عَبَّاسٍ أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعَةِ أَعْضَاءٍ وَلاَ يَكُفَّ شَعَرًا وَلاَ ثَوْبًا الْجَبْهَةِ وَالْيَدَيْنِ وَالرُّكْبَتَيْنِ وَالرِّجْلَيْنِ  

"The Prophet ﷺ was commanded to prostrate on seven bones and was forbidden to tuck up his hair and garment."  

أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ وَنُهِيَ أَنْ يَكُفَّ الشَّعْرَ وَالثِّيَابَ  

"The Prophet ﷺ was commanded to prostrate on seven parts of his body and not to tuck up his hair or his garment." (Using translation from Nasāʾī 1093)   

أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَلا يَكُفَّشَعْرًا وَلا ثَوْبًا  

The Apostle of Allah ﷺ had been commanded that he should prostrate on the seven (bones) and he was forbidden to fold back the hair and clothing. And in the narration transmitted by Abu Rabi' (the words are):" on the seven bones and I was forbidden to fold back the hair and clothing". According to Abu'l-Rabi' (the seven bones are): The hands, the knees, and the (extremities) of the feet and the forehead. (Using translation from Muslim 490a)  

أُمِرَ رَسُولُ اللهِ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَنُهِيَ أَنْ يَكُفَّ شَعَرَهُ وَثِيَابَهُ  

[Machine] Narrated by Ibn Abbas: The Prophet ﷺ was ordered to prostrate on seven body parts, and he was forbidden to cover his hair or garment.  

عَنِ ابْنِ عَبَّاسٍ أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَنُهِيَ أَنْ يَكُفَّ شَعْرًا أَوْ ثَوْبًا  

[Machine] "The Prophet ﷺ ordered us to prostrate on seven parts and not to touch any hair or clothing."  

«أُمَرَ النَّبِيُّ ﷺ أَنْ نَسْجُدَ عَلَى سَبْعٍ وَلَا نَكُفَّ شَعْرًا وَلَا ثَوْبًا»  

The Apostle of Allah ﷺ had been commanded that he should prostrate on the seven (bones) and he was forbidden to fold back the hair and clothing. And in the narration transmitted by Abu Rabi' (the words are):" on the seven bones and I was forbidden to fold back the hair and clothing". According to Abu'l-Rabi' (the seven bones are): The hands, the knees, and the (extremities) of the feet and the forehead. (Using translation from Muslim 490a)  

«أُمِرَ رَسُولُ اللهِ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَنُهِي أَنْ يَكُفَّ شَعْرَهُ وَثِيَابَهُ»  

[Machine] "The Messenger of Allah ﷺ commanded us to prostrate on seven body parts, and forbid us from covering our hair or clothing."  

«أُمِرَ رسول الله ﷺ أَنْ نسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ وَنُهِي أَنْ نكُفَّ شَعْرًا أَوْ ثَوْبًا»  

[Machine] "The Prophet ﷺ was commanded to prostrate on seven (limbs) and to cover his hair or garment."  

«أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعَةٍ وَأَنْ يَكُفَّ شَعْرَهُ أَوْ ثِيَابَهُ»  

"The Prophet ﷺ was commanded to prostrate on seven bones and was forbidden to tuck up his hair and garment." (Using translation from Nasāʾī 1115)  

«أُمِرَ رَسُولُ اللهِ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ وَنُهِيَ أَنْ يَكُفَّ الشَّعْرَ وَالثِّيَابَ»