Abu Hurairah reported,
The Prophet ﷺ said, "When one of you wakes from sleep, he should not dip his hand into his washing water until he has washed it three times, for none of you knows where his hand has spent the night."
Nasai 1
Sahihأخبرنا قتيبة بن سعيد قال حدثنا سفيان عن الزهري عن أبي سلمة
عن أبي هريرة
أن النبي ﷺ قال إذا استيقظ أحدكم من نومه فلا يغمس يده في وضوئه حتى يغسلها ثلاثا فإن أحدكم لا يدري أين باتت يده
النسائي 1صحيح
Contents
Reference
Commentary
Ayat
Collection
Sunan Nasai Sughra
Book
Purification
Chapter
Interpretation of His saying 
, "When you rise to prayer, wash your faces and your hands up to the elbows"
, "When you rise to prayer, wash your faces and your hands up to the elbows"Numbering
Darussalam 1
Details
Collection
Sunan Nasai Sughra
Book
Purification
Chapter
Interpretation of His saying , "When you rise to prayer, wash your faces and your hands up to the elbows"
, "When you rise to prayer, wash your faces and your hands up to the elbows"Numbering
Darussalam 1
Ayat
No annotations are available.
Reference
Commentary
Darussalam
Muslim also narrated it in Kitab Tahara, chapter on the dislike of the one performing wudu, or anyone else, dipping his hand when it is doubtful whether it is impure, etc., hadith (278), from the hadith of Sufyan bin Uyayna, transmitted in this manner. It is also found in Sunan al-Kubra by Nasai, hadith.