Regarding the excellence of praying at home, the Prophet salAllahu ‘alayhi wa sallam said,
“Verily, the best prayer of a person is in his house, except for the obligatory prayer.”
Also, from the hadeeth where the Prophet salAllahu ‘alayhi wa sallam said,
“The voluntary prayer of a man (in a place) where no person can see him is equal to twenty-five times his prayer where people can see him.”
In another ahadeeth, the Prophet salAllahu ‘alayhi wa sallam said,
“The superiority of the prayer of a man in his house over his prayer (in a place) so that the people can see him, is like the superiority of the obligatory over the voluntary.”
The Sunnah is repeated many times during the day and night. It includes prayers like Sunnah Ar-Rawatib, Salah Ad-Duha and Al-Witr.
For everyone of these the person should observe the prayers in his house in order to increase his reward and fulfill the Sunnah.
Implementing these voluntary prayers in the house is a mean to:
- Perfecting tranquility and sincerity
- Distancing oneself from showing off
- Letting mercy descend on the house
- Causing Shaytan to leave
- Multiplying the reward of the voluntary prayer, just as the reward of the obligatory prayer is multiplied by performing it in the Masjid.