Anyone who performs ablution and performs his ablution well, and then he offers two rak’ahs of prayers in a way that he does not forget ( anything in it), will be forgiven all his past sins.  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ تَوَضَّأَ فَأَحْسَنَ وُضُوءَهُ ثُمَّ صَلَّى رَكْعَتَيْنِ لاَ يَسْهُو فِيهِمَا غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ  

Any one performs ablution and performs the ablution perfectly and then offers two rak’ahs of prayers concentrating on them with his heart and face but paradise will necessarily fall to his lot.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَا مِنْ أَحَدٍ يَتَوَضَّأُ فَيُحْسِنُ الْوُضُوءَ وَيُصَلِّي رَكْعَتَيْنِ يُقْبِلُ بِقَلْبِهِ وَوَجْهِهِ عَلَيْهِمَا إِلاَّ وَجَبَتْ لَهُ الْجَنَّةُ