أَوَّلُ مَا يُحَاسَبُ بِهِ الْعَبْدُ يَوْمَ الْقِيَامَةِ مِنْ عَمَلِهِ الصَّلَاةُ، فَإِنْ صَلُحَتْ صَلُحَ سَائِرُ عَمَلِهِ
Transliteration
Awwalu ma yuhasabu bihi-l-'abdu yawma-l-qiyamati min 'amalihi-s-salah, fa-in saluhat saluha sa'iru 'amalih.
Translation
The first thing the servant will be asked about on the Day of Resurrection, from his deeds, is the prayer. If it is sound, the rest of his deeds will be sound.
Narrated by Abu Hurayrah·Jami' at-Tirmidhi 413 (sahih)
