فَإِنَّهُ رُوِيَ أَنَّهُ مَنْ صَلَّى عَلَى مُحَمَّدٍ وَ آلِهِ مِائَةَ مَرَّةٍ بَيْنَ رَكْعَتَيِ الْفَجْرِ وَ رَكْعَتَيِ الْغَدَاةِ وَقَى اللَّهُ وَجْهَهُ حَرَّ النَّارِ وَ مَنْ قَالَ مِائَةَ مَرَّةٍ- سُبْحَانَ رَبِّيَ الْعَظِيمِ وَ بِحَمْدِهِ أَسْتَغْفِرُ اللَّهَ رَبِّي وَ أَتُوبُ إِلَيْهِ- بَنَى اللَّهُ لَهُ بَيْتاً فِي الْجَنَّةِ وَ مَنْ قَرَأَ إِحْدَى وَ عِشْرِينَ مَرَّةً قُلْ هُوَ اللَّهُ أَحَدٌ بَنَى اللَّهُ لَهُ بَيْتاً فِي الْجَنَّةِ فَإِنْ قَرَأَهَا أَرْبَعِينَ مَرَّةً غَفَرَ اللَّهُ لَهُ.
English translationBab Ul Qaim Publications
Hadith.1423 - It has been narrated: "Whoever sends blessings upon Muhammad and his family one hundred times between the two Rak'ahs of Fajr and the two Rak'ahs of Ghadah (morning prayer), Allah (swt) will protect his face from the heat of Hellfire. Whoever says one hundred times: 'Glory is to my Lord (azj), the Most Great, and with His praise. I seek forgiveness from Allah (swt), my Lord (azj), and I turn to Him in repentance,' Allah (swt) will build for him a house in Paradise. And whoever recites 'Qul Huwa Allahu Ahad' (Surah Al-Ikhlas) twenty-one times, Allah (swt) will build for him a house in Paradise. If he recites it forty times, Allah (swt) will forgive him."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.