The Book of Purification
Bulugh al-Maram #145
كتاب الطهارة
وَلَهُمَا فِي حَدِيثِ مَيْمُونَةَ: «ثُمَّ أَفْرَغَ عَلَى فَرْجِهِ, فَغَسَلَهُ بِشِمَالِهِ, ثُمَّ ضَرَبَ بِهَا اَلْأَرْضَ»
Narrated Maimuma (rad):
Allah’s Messenger (ﷺ) poured water over his private parts and washed them with his left hand. He then struck his hand against the earth.
وَلَهُمَا فِي حَدِيثِ مَيْمُونَةَ: "ثُمَّ أَفْرَغَ عَلَى فَرْجِهِ, فَغَسَلَهُ بِشِمَالِهِ, ثُمَّ ضَرَبَ بِهَا اَلْأَرْضَ"
Allah’s Messenger (ﷺ) poured water over his private parts and washed them with his left hand. He then struck his hand against the earth.
— Bulugh al-Maram, Hadith 145