Umar bin Al-Khattab Radi Allahu Anh narrated that : Allah’s Messenger Prophet (Sallal lahu alaihi wasallam) said: ‘Whoever performs Wudu, making Wudu well, then says:
أَشْهَدُ أَنْ لَا اِلَهَ اِلَّا اللهِ وَحْدَهُ لَا شَرِيكَ لَهُ وَأَشْهَدُ أَنَّ مُحَمَّدَاً عَبْدَهُ وَرَسُولَهُ
اللَّهُمَّ اجْعَلْنِي مِنَ التَّوَّابِينَ وَاجْعَلْنِي مِنَ الْمُتَطَهِّرِينَ
Eight gates of Paradise will be opened to him and he may enter through whichever one he wants.