(28) باب التَّيَمُّمِ
Ibn Umar reported:
A person happened to pass by the Messenger of Allah (ﷺ) when he was making water and saluted him, but he did not respond to his salutation.
Reference: Sahih Muslim 370
In-book reference: Book 3, Hadith 144
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 721