Drinks - Section 1 Mishkat al-Masabih 4268
Arabic hadith text
وَعَن ابْن عَبَّاس قَالَ: أَتَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِدَلْوٍ مِنْ مَاءِ زَمْزَمَ فَشَرِبَ وَهُوَ قَائِمٌ
Translation
Ibn 'Abbas told that when he brought the Prophet a bucket of Zamzam water he drank it while standing. (Bukhari and Muslim.)