Imam Baqir (a.s.) narrated an incident during the time of the Holy Prophet (s.a.w.a.) when some prisoners were brought to him. Since the captives were dangerous and treacherous, the Holy Prophet (s.a.w.a.) ordered all, except one of them, to be executed. When the freed man inquired from the Holy Prophet (s.a.w.a.) about the reason for his pardon and subsequent freedom, the Holy Prophet (s.a.w.a.) said that Jibraeel (a.s.) informed me that you have five characteristics, which are liked by Allah and His Prophet. They are extreme honor for the family, generosity, cordial disposition, truthfulness of tongue and bravery. When the man heard this, he embraced Islam and gained prominence among the companions of the Holy Prophet (s.a.w.a.). Later he got martyred in the battle of Yaak.
Wasaelush-Shiah, vol. 14, pg 109, chap 77, tradition 10, Akhlaq in Quran