Hadith 1250
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).
Hadith 1269
Narrated Umm Habibah: The Prophet ﷺ said: If anyone keeps on praying regularly four rak'ahs before and four after the noon prayer, he will not enter the Hell-fire. Abu Dawud said: Al-'Ala bin Al-Harith and Sulaiman bin Musa reported it from Makhul with his chain, similarly.