قَالَ أَبُو جَعْفَرٍ اَلْبَاقِرُ عَلَيْهِ اَلسَّلاَمُ: «إِذَا دَخَلَ اَلْوَقْتُ وَجَبَ اَلطَّهُورُ وَ اَلصَّلاَةُ وَ لاَ صَلاَةَ إِلاَّ بِطَهُورٍ.
Imam Muhammad ibn Ali Al-Baqir (a.s) said: "When the time for prayer enters, purification (ablution) and the prayer become obligatory, and there is no prayer without purification."