The Book of Purification
1/43. Chapter:
Rubbing The Hand On The Ground After Istinja'
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ الْمُخَرِّمِيُّ، قَالَ حَدَّثَنَا وَكِيعٌ، عَنْ شَرِيكٍ، عَنْ إِبْرَاهِيمَ بْنِ جَرِيرٍ، عَنْ أَبِي زُرْعَةَ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم تَوَضَّأَ فَلَمَّا اسْتَنْجَى دَلَكَ يَدَهُ بِالأَرْضِ .
It was narrated from Abu Hurairah that the Prophet (ﷺ) performed Wudu', and when he had performed Istinja' he rubbed his hand on the ground.
Reference : Sunan an-Nasa'i 50In-book reference : Book 1, Hadith 50English translation : Vol. 1, Book 1, Hadith 50