Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
muslim:503eZuhayr b. Ḥarb And Muḥammad b. Ḥātim > Ibn Mahdī

The people began to get water that was left out of his (the Prophet's) ablution.  

مسلم:٥٠٣eوَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ وَمُحَمَّدُ بْنُ حَاتِمٍ قَالاَ حَدَّثَنَا ابْنُ مَهْدِيٍّ

حَدَّثَنَا شُعْبَةُ بِالإِسْنَادَيْنِ جَمِيعًا مِثْلَهُ وَزَادَ فِي حَدِيثِ الْحَكَمِ فَجَعَلَ النَّاسُ يَأْخُذُونَ مِنْ فَضْلِ وَضُوئِهِ