(1) باب التَّطَوُّعِ وَرَكَعَاتِ السُّنَّةِ
Narrated Umm Habibah:
The Prophet (ﷺ) as saying: If anyone prays in a day and a night twelve rak'ahs voluntarily (supererogatory prayer), a house will be built from him in Paradise on account of these (rak'ahs). (FR)
Reference (FR): Sunan Abi Dawud 1250 (FR)
In-book reference (FR): Book 5, Hadith 1 (FR)
English translation (FR): Book 5, Hadith 1245 (FR)