Al-Kāfi - Volume 3 > Recitations in Salah (prayer)
Hadith #28

28ـ عَلِيٌّ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ يُونُسَ عَنِ الْعَلاَءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ قَالَ سَأَلْتُهُ عَنِ الَّذِي لاَ يَقْرَأُ فَاتِحَةَ الْكِتَابِ فِي صَلاَتِهِ قَالَ لاَ صَلاَةَ لَهُ إِلاَّ أَنْ يَبْدَأَ بِهَا فِي جَهْرٍ أَوْ إِخْفَاتٍ قُلْتُ أَيُّهُمَا أَحَبُّ إِلَيْكَ إِذَا كَانَ خَائِفاً أَوْ مُسْتَعْجِلاً يَقْرَأُ بِسُورَةٍ أَوْ فَاتِحَةِ الْكِتَابِ قَالَ فَاتِحَةَ الْكِتَابِ.

28. Ali ibn Muhammad has narrated from ‘Isa from Yunus from al-‘Ala’ from Muhammad ibn Muslim who has said the following: “I once asked him (the Imam), ‘Alayhi al-Salam, about one who does not read al-Fatihah in his Salah (prayer). He (the Imam) said, ‘His Salah (prayer) is not valid. He must begin with it (al-Fatihah) that which is read aloud or quietly.’ I then asked, ‘Which one is more beloved to you: if one is afraid or in a hurry, is it reading a Surah (chapter) or al-Fatihah of al-Kitab?’ He (the Imam) said, ‘al-Fatihah of al-Kitab is more beloved.’” (Ahadith 20-28 are best explained in the form of fatwa.)