[Abu 'Eisa said:] This Hadith is Hasan Sahih.
In-book : Book 22, Hadith 37
English translation : Vol. 3, Book 20, Hadith 1654
22. The Book on Virtues of Jihad
باب مَا جَاءَ إِذَا اسْتَيْقَظَ أَحَدُكُمْ مِنْ مَنَامِهِ فَلاَ يَغْمِسْ يَدَهُ فِي الإِنَاءِ حَتَّى يَغْسِلَهَا