Anas bin Malik reported,

Ziyad, or Ibn Ziyad, mentioned the Pond in a gathering and denied its existence. When word of this reached Anas, he said, "By Allah, I will set him straight tomorrow."He said to them, "What is it about the Pond that you deny?"They replied, "Did you hear the Prophet ﷺ mention it?"He answered, "Yes. I knew elderly women in Medina who never performed a prayer without asking Allah Almighty to let them drink from the Pond of Muhammad ﷺ."

Azami 855

Sahih

عن أنس بن مالك

أن زيادا- أو ابن زياد- ذكر عنده الحوض، فأنكر ذلك، فبلغ ذلك أنسا فقال: أما والله لأسونه غدا، فقال: ما أنكرتم من الحوض؟ قالوا: سمعت النبي ﷺ يذكره. قال: نعم، ولقد أدركت عجائز بالمدينة لا يصلين صلاة إلا سألن الله تعالى أن يوردهن حوض محمد ﷺ.

الأعظمي 855صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Faith in the Prophet ﷺ
Section
Faith in affirming the basin of the Prophet ﷺ and its attributes, and who among his nation will come to it and who will be driven away from it
Numbering
Jami al-Kamil 855 (2nd edition)