(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). (JA)
Reference (JA): Sunan Abi Dawud 1250 (JA)
In-book reference (JA): Book 5, Hadith 1 (JA)
English translation (JA): Book 5, Hadith 1245 (JA)