Saad bin Abu Waqqas reported,

The Messenger of Allah ﷺ gave gifts to a group of men while I was sitting among them. He left out one man and gave him nothing, though he was the most impressive of them in my eyes. So I stood up, went over to the Messenger of Allah ﷺ, and spoke to him privately.I said, "What is the matter with you regarding so-and-so? By Allah, I consider him a believer."He said, "Or a Muslim."I remained silent for a little while, then what I knew about the man overcame me, so I said again, "Messenger of Allah, what is the matter with you regarding so-and-so? By Allah, I consider him a believer."He said, "Or a Muslim."I remained silent for a little while, then what I knew about the man overcame me again, so I said, "Messenger of Allah, what is the matter with you regarding so-and-so? By Allah, I consider him a believer."He said, "Or a Muslim."Then he said, "I sometimes give to a man while another whom I have not given is dearer to me than him, out of fear that he might be cast into the Fire on his face."

عن سعد بن أبي وقاص، قال

أعطى رسول الله ﷺ رهطا وأنا جالس فيهم، قال: فترك رسول الله ﷺ منهم رجلا لم يعطه وهو أعجبهم إلي فقمت إلى رسول الله ﷺ فساررته فقلت: ما لك عن فلان، والله إني لأراه مؤمنا قال: أو مسلما. قال: فسكت قليلا ثم غلبني ما أعلم فيه فقلت: يا رسول الله، ما لك عن فلان والله إني لأراه مؤمنا. قال: أو مسلما. قال: فسكت قليلا ثم غلبني ما أعلم فيه فقلت: يا رسول الله، ما لك عن فلان، والله إني لأراه مؤمنا قال: أو مسلما. يعني فقال: إني لأعطي الرجل وغيره أحب إلي منه خشية أن يكب في النار على وجهه.