Sahih Muslim 2004aBook 36, Hadith 100
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنْ يَحْيَى بْنِ عُبَيْدٍ، أَبِي عُمَرَ الْبَهْرَانِيِّ قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يَقُولُ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُنْتَبَذُ لَهُ أَوَّلَ اللَّيْلِ فَيَشْرَبُهُ إِذَا أَصْبَحَ يَوْمَهُ ذَلِكَ وَاللَّيْلَةَ الَّتِي تَجِيءُ وَالْغَدَ وَاللَّيْلَةَ الأُخْرَى وَالْغَدَ إِلَى الْعَصْرِ فَإِنْ بَقِيَ شَىْءٌ سَقَاهُ الْخَادِمَ أَوْ أَمَرَ بِهِ فَصُبَّ .
Ibn 'Abbas reported that Nabidh was prepared for Allah's Messenger (ﷺ) in the beginning of the night and he would drink it in the morning and the following night and the following day and the night after that up to the afternoon. If anything was left out of that he gave it to his servant, or gave orders for it to be poured out.