Pillars of Prayer
3 hadiths
The prayer of the one who did not recite the Opening of the Book (Surat al-Fātihah) is invalid
‘Ubādah ibn as-Sāmit (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "The prayer of the one who did not recite the Opening of the Book (Surat al-Fātihah) is invalid."
Perhaps you recite behind your Imām? We said: Yes, that is so, O Messenger of Allah. He said: Do not do so except with Sūrat al-Fātihah, since the prayer is invalid for the one who does not recite it
‘Ubādah ibn As-Sāmit (may Allah be pleased with him) reported: We were praying the Fajr prayer behind the Messenger of Allah (may Allah's peace and blessings be upon him). He started to recite, but the recitation became difficult for him. When he finished, he said: "Perhaps you recite behind your Imām?" We said: "Yes, that is so, O Messenger of Allah." He said: "Do not do so except with Sūrat al-Fātihah, since the prayer is invalid for the one who does not recite it."
The worst of thieves among people is the one who steals his prayer." He said: "How does he steal his prayer?" He said: "He does not perform its Rukū‘ or prostration perfectly
Abu Hurayrah (may Allah be pleased with him) reported: The Messenger of Allah (may Allah’s peace and blessings be upon him) said: "The worst of thieves among people is the one who steals his prayer." He said: "How does he steal his prayer?" He said: "He does not perform its Rukū‘ or prostration perfectly."