Malik related to me from Ibn Shihab from al-Araj from Abu Hurayra
that the Messenger of Allah, may Allah bless him and grant him peace,
said, "No one should prevent his neighbour from fixing a wooden peg in
his wall." Then Abu Hurayra said, "Why do I see you turning away from
it? By Allah! I shall keep on at you about it."
Muwatta Malik Book 36, Hadith 43