Wilayat-e-Ahle Bayt (a.s.)

عَنْ أَبِي عَبْدِ اللَّهِ ع قَالَ: إِنَّ أَوَّلَ مَا يُسْأَلُ عَنْهُ الْعَبْدُ إِذَا وَقَفَ بَيْنَ يَدَيِ اللَّهِ جَلَّ جَلَالُهُ عَنِ الصَّلَوَاتِ الْمَفْرُوضَاتِ وَ عَنِ الزَّكَاةِ الْمَفْرُوضَةِ وَ عَنِ الصِّيَامِ الْمَفْرُوضِ وَ عَنِ الْحَجِّ الْمَفْرُوضِ وَ عَنْ وَلَايَتِنَا أَهْلَ الْبَيْتِ فَإِنْ أَقَرَّ بِوَلَايَتِنَا ثُمَّ مَاتَ عَلَيْهَا قُبِلَتْ مِنْهُ صَلَاتُهُ وَ صَوْمُهُ وَ زَكَاتُهُ وَ حَجُّهُ وَ إِنْ لَمْ يُقِرَّ بِوَلَايَتِنَا بَيْنَ يَدَيِ اللَّهِ جَلَّ جَلَالُهُ لَمْ يَقْبَلِ اللَّهُ عَزَّ وَ جَلَّ مِنْهُ شَيْئاً مِنْ أَعْمَالِه‏

Imam Sadeq (a.s.) says: The first thing Allah (swt) will ask a servant when he stands in front of Him (following his death) is his obligatory salat, zakat, fast, hajj and wilayat of Ahle Bayt (a.s.). One who acknowledges our wilayat and dies on it his salat, zakat, fast and hajj will be accepted. And if he doesn’t acknowledge our wilayat, Allah will not accept anything from his action.

Behar Al-Anwaar vol 27, page 167, Amaali Saduq pg 154, 155