Chapter 21: Funerals (Kitab Al-Jana'iz)
Narrated Anas ibn Malik: The Prophet (ﷺ) said: If anyone performs ablution well and pays a visit to his (sick) Muslim brother seeking his reward from Allah, he will be removed a distance of seventy years (kharif) from Hell. I asked: What is kharif, Abu Hamzah? He replied: A year. Abu Dawud said: Only the people of Basrah have narrated the tradition on visiting the sick after performing ablution.
Sunan Abi Dawud 3097