Benefits and rewards of praying sunnah salaah, optional prayers, nawaafil salaah, namaaz at home.
Shaykh ibn Uthaymeen رحمه الله said:
“It is from wisdom that a person performs the optional prayers in his home, so his children can see and learn from him, and so the womenfolk can follow his example. Also this is so his house does not become a grave in which there is no prayer prayed therein.”
Fath Dhul Jalāl wal-Ikrām Sharh Bulūgh al-Marām 3/46 | Shaykh ibn Uthaymeen رحمه الله