(29) Excellent Qualities and Description of the Prophet
كتاب الفضائل والشمائل
(7a) Chapter: Miracles - Section 1
(7) باب في ا لمعجزات - الفصل الأول
Mishkat al-Masabih 5868 
Anas b. Malik told that Abu Bakr as-Siddiq said:
I looked at the feet of the polytheists above our heads when we were in the cave and said, "Messenger of God, if one of them were to look at his foot he would see us." He replied, "Abd Bakr, what do you think of two people along with whom God makes a third?" (Bukhari and Muslim.)
عَنْ أَنَسِ بْنِ مَالِكٍ أَنَّ أَبَا بَكْرٍ الصّديق رَضِي الله عَنهُ قا ل: نظرتُ إِلى أقدامِ المشركينَ على رؤوسنا وَنَحْنُ فِي الْغَارِ فَقُلْتُ يَا رَسُولَ اللَّهِ لَوْ أَنَّ أَحَدَهُمْ نَظَرَ إِلَى قَدَمِهِ أَبْصَرَنَا فَقَالَ: «يَا أَبَا بَكْرٍ مَا ظَنُّكَ بِاثْنَيْنِ اللَّهُ ثالثهما» مُتَّفق عَلَيْهِ
 مُتَّفق عَلَيْهِ  (الألباني)حكم :
Reference : Mishkat al-Masabih 5868
In-book reference : Book 29, Hadith 126