Jami` at-Tirmidhi 1882
جامع الترمذي#1882Sahihحَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا هُشَيْمٌ، حَدَّثَنَا عَاصِمٌ الأَحْوَلُ، وَمُغِيرَةُ، عَنِ الشَّعْبِيِّ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم شَرِبَ مِنْ زَمْزَمَ وَهُوَ قَائِمٌ . قَالَ وَفِي الْبَابِ عَنْ عَلِيٍّ وَسَعْدٍ وَعَبْدِ اللَّهِ بْنِ عَمْرٍو وَعَائِشَةَ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Narrated Ibn 'Abbas: "The Prophet (ﷺ) drank from Zamzam while he was standing." He said: There are narrations on this topic from 'Ali, Sa'd, 'Abdullah bin 'Amr and 'Aishah. [Abu 'Eisa said:] This Hadith is Hasan Sahih
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 26:22