Yahya bin Sa'id narrates that when Zayd bin Thabit (may Allah be pleased with him) died, Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: "Today the scholar of this Ummah has died, and perhaps Allah will make up for his loss in Ibn Abbas."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4733