(29) باب اسْتِحْبَابِ صَلاَةِ النَّافِلَةِ فِي بَيْتِهِ وَجَوَازِهَا فِي الْمَسْجِدِ
Ibn 'Umar reported Allah's Apostle (ﷺ) as saying:
Observe some of your prayers in your houses and do not make them graves. (ID)
Reference (ID): Sahih Muslim 777 a (ID)
In-book reference (ID): Book 6, Hadith 248 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1703 (ID)