Muwatta Malik, Book 9, Hadith 76 (USC-MSA)

Yahya related to me from Malik from Hisham ibn Urwa from his father that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do some of the prayers in your houses."

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ اجْعَلُوا مِنْ صَلاَتِكُمْ فِي بُيُوتِكُمْ ‏" ‏ ‏.‏

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also referenced under: Book 9, Hadith 407 (In-Book)