(49) باب فِي الرَّجُلِ يُدْخِلُ يَدَهُ فِي الإِنَاءِ قَبْلَ أَنْ يَغْسِلَهَا
Abu Hurairah reported :
The Messenger of Allah (ﷺ) said: When anyone amongst you wakes up from sleep at night, he should not put his hand in the utensil until he has washed his hand three times, for he does' not know where his hand was during the night.
Reference: Sunan Abi Dawud 103
In-book reference: Book 1, Hadith 103
English translation: Book 1, Hadith 103