Narrated Al-Bara:

Do you (people) consider the conquest of Mecca, the Victory (referred to in the Qur'an 48:1). Was the conquest of Mecca a victory? We really consider that the actual Victory was the Ar-Ridwan Pledge of allegiance which we gave on the day of Al-Hudaibiya (to the Prophet) . On the day of Al-Hudaibiya we were fourteen hundred men along with the Prophet Al-Hudaibiya was a well, the water of which we used up leaving not a single drop of water in it. When the Prophet was informed of that, he came and sat on its edge. Then he asked for a utensil of water, performed ablution from it, rinsed (his mouth), invoked (Allah), and poured the remaining water into the well. We stayed there for a while and then the well brought forth what we required of water for ourselves and our riding animals.

حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنْ إِسْرَائِيلَ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ ـ رضى الله عنه ـ قَالَ تَعُدُّونَ أَنْتُمُ الْفَتْحَ فَتْحَ مَكَّةَ، وَقَدْ كَانَ فَتْحُ مَكَّةَ فَتْحًا، وَنَحْنُ نَعُدُّ الْفَتْحَ بَيْعَةَ الرُّضْوَانِ يَوْمَ الْحُدَيْبِيَةِ. كُنَّا مَعَ النَّبِيِّ ﷺ أَرْبَعَ عَشْرَةَ مِائَةً، وَالْحُدَيْبِيَةُ بِئْرٌ فَنَزَحْنَاهَا، فَلَمْ نَتْرُكْ فِيهَا قَطْرَةً، فَبَلَغَ ذَلِكَ النَّبِيَّ ﷺ فَأَتَاهَا، فَجَلَسَ عَلَى شَفِيرِهَا، ثُمَّ دَعَا بِإِنَاءٍ مِنْ مَاءٍ فَتَوَضَّأَ ثُمَّ مَضْمَضَ وَدَعَا، ثُمَّ صَبَّهُ فِيهَا فَتَرَكْنَاهَا غَيْرَ بَعِيدٍ ثُمَّ إِنَّهَا أَصْدَرَتْنَا مَا شِئْنَا نَحْنُ وَرِكَابَنَا.