Sahih Muslim 8991
In-book no 1714وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَأَبُو كُرَيْبٍ قَالاَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنِ الأَعْمَشِ، عَنْ أَبِي سُفْيَانَ، عَنْ جَابِرٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا قَضَى أَحَدُكُمُ الصَّلاَةَ فِي مَسْجِدِهِ فَلْيَجْعَلْ لِبَيْتِهِ نَصِيبًا مِنْ صَلاَتِهِ فَإِنَّ اللَّهَ جَاعِلٌ فِي بَيْتِهِ مِنْ صَلاَتِهِ خَيْرًا " .
Jabir reported Allah's Messenger (ﷺ) as saying: When any one of you observes prayer in the mosque he should reserve a part of his prayer for his house, for Allah would make the prayer as a means of betterment in his house.