Sayyiduna Ubadah bin al-Samit (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "There is no prayer for the one who does not recite Surah al-Fatihah and something more."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3950