Zayd bin Wahb (may Allah have mercy on him) said: Two men disagreed about a verse of the Qur'an, so both of them came to Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him). One said: "Abu Amrah taught me to recite it," and the other said: "Umar (may Allah be pleased with him) taught me to recite it." When Umar (may Allah be pleased with him) was mentioned, Sayyiduna Abdullah (may Allah be pleased with him) wept while standing, wiped his eyes and shook his hand off over the pebbles. Then he said: "It is clearer than the road of al-Saylahin." Then he said: "Recite it as Umar (may Allah be pleased with him) taught you. Any household of the Muslims that was not touched by grief on the day Umar (may Allah be pleased with him) was martyred is an evil household. Umar (may Allah be pleased with him) was the most God-fearing of us and the best reciter of the Book of Allah among us."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8770