Sahih al-Bukhari, Hadith 432 ⓘ
Narrated Ibn `Umar: The Prophet had said, "Offer some of your prayers (Nawafil) at home, and do not take your houses as graves."
حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، قَالَ أَخْبَرَنِي نَافِعٌ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " اجْعَلُوا فِي بُيُوتِكُمْ مِنْ صَلاَتِكُمْ، وَلاَ تَتَّخِذُوهَا قُبُورًا " .
also referenced under: Book 8, Hadith 82 (In-Book) & Volume 1, Book 8, Hadith 424 (USC-MSA)