Abdullah bin Abbas reported,

The Messenger of Allah ﷺ came to the watering station and asked for a drink.Abbas said, "Fadl, go to your mother and bring the Messenger of Allah ﷺ a drink from her."The Prophet ﷺ said, "Give me a drink from this."Abbas said, "Messenger of Allah, people put their hands in it."He said again, "Give me a drink."So he drank from it. Then he came to Zamzam, where people were drawing water and working. He said, "Carry on, for you are engaged in a righteous work." Then he said, "Were it not that you would be overwhelmed, I would come down myself until I placed the rope here," meaning on his shoulder, and he pointed to his shoulder.

Bukhari 1635

Sahih

حدثنا إسحاق حدثنا خالد عن خالد الحذاء عن عكرمة

عن ابن عباس رضي الله عنهما

أن رسول الله ﷺ جاء إلى السقاية فاستسقى فقال العباس يا فضل اذهب إلى أمك فأت رسول الله ﷺ بشراب من عندها فقال اسقني قال يا رسول الله إنهم يجعلون أيديهم فيه قال اسقني فشرب منه ثم أتى زمزم وهم يسقون ويعملون فيها فقال اعملوا فإنكم على عمل صالح ثم قال لولا أن تغلبوا لنزلت حتى أضع الحبل على هذه يعني عاتقه وأشار إلى عاتقه

البخاري 1635صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Hajj
Chapter
Providing water to the pilgrims
Numbering
Darussalam 1635
Bukhari 1635