Zayd bin Wahb (may Allah have mercy on him) said that Sayyiduna Umar (may Allah be pleased with him) recited the qunut. The narrator said: I asked Zayd (may Allah have mercy on him): "After the bowing?" He said: "Yes."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3135