Sahih Bukhari Volume 7, Book 67, Hadith 5166

حَدَّثَنِي عُبَيْدُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّهَا اسْتَعَارَتْ مِنْ أَسْمَاءَ قِلاَدَةً، فَهَلَكَتْ، فَأَرْسَلَ رَسُولُ اللَّهِ صلى الله عليه وسلم نَاسًا مِنْ أَصْحَابِهِ فِي طَلَبِهَا، فَأَدْرَكَتْهُمُ الصَّلاَةُ فَصَلَّوْا بِغَيْرِ وُضُوءٍ، فَلَمَّا أَتَوُا النَّبِيَّ صلى الله عليه وسلم شَكَوْا ذَلِكَ إِلَيْهِ، فَنَزَلَتْ آيَةُ التَّيَمُّمِ‏.‏ فَقَالَ أُسَيْدُ بْنُ حُضَيْرٍ جَزَاكِ اللَّهُ خَيْرًا، فَوَاللَّهِ مَا نَزَلَ بِكِ أَمْرٌ قَطُّ، إِلاَّ جَعَلَ لَكِ مِنْهُ مَخْرَجًا، وَجُعِلَ لِلْمُسْلِمِينَ فِيهِ بَرَكَةٌ‏

Narrated By 'Aisha : That she borrowed a necklace from Asma' and then it got lost. So Allah's Apostle sent some people from his companions in search of it. In the meantime the stated time for the prayer became due and they offered their prayer without ablution. When they came to the Prophet, they complained about it to him, so the Verse regarding Tayammum was revealed. Usaid bin Hudair said, "(O 'Aisha!) may Allah bless you with a good reward, for by Allah, never did a difficulty happen in connection with you, but Allah made an escape from it for you, and brought Allah's Blessings for the Muslims."