Ibn Athir the great biographist held: "Ali was the first caliph both of whose parents were pure Hashimites. He was so judicial minded that he could not put up with the dishonesty of his relative or friend. He was so much engrossed in piety that at the time of his marriage with Fatima, he did not possess anything save a camel skin on which he fed his camels in the day, and which he converted into a bed sheet at night. The Prophet in his table talk has not extolled any one of his companions as much as he has Ali. Surely, Ali never spoke a lie during his lifetime."