I came to the Messenger of Allah ﷺ at Tabuk in the last part of the night, while he was in a tent, or he said a dome, made of leather. I called out and then asked permission, saying, "Shall I enter?"He said, "Enter."I asked, "All of me?"He replied, "All of you."So I entered, and there he was performing his ablution slowly and deliberately.
حدثنا زكريا بن عدي قال أنبأنا عبيد الله بن عمرو الرقي عن إسحاق بن راشد عن عبد الحميد بن عبد الرحمن بن زيد بن الخطاب
أتيت رسول الله ﷺ بتبوك من آخر السحر وهو في فسطاط أو قال قبة من أدم قال فسألت ثم استأذنت فقلت أدخل فقال ادخل قلت كلي قال كلك قال فدخلت وإذا هو يتوضأ وضوءا مكيثا
No references are available.
Its isnad is sahih. Ubaydullah bin Amr Raqqi Asadi is trustworthy, his hadith is found among the group of narrators, and likewise Abdul-Hameed. As for Ishaq bin Rashid, he is trustworthy, his hadith is found in Bukhari and the Sunan works. The hadith has already appeared at 23853.