It is narrated from Abu Raja' that Ibn Abbas (may Allah be pleased with him) led us in the Fajr prayer and recited the qunut before the bowing (ruku'). When he finished the prayer with the salam, he said: This is the middle prayer about which the Exalted Lord has said: "And stand before Allah in devout obedience." [Surah al-Baqarah: 238]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2171