It was narrated from Saad bin Ishaq bin Ka’b bin ‘Ujrah, from his father, that his grandfather said: “The Messenger of Allah صلی اللہ علیہ وآلہ وسلم prayed Maghrib in the Masjid of Banu ‘Abdul-Ashhal, and when he finished praying, some people stood up and offered Nafl prayers. The Prophet said: ‘You should offer this prayer in your houses.” (Hasan)