One day, while Ibn Umar was in the mosque, he noticed a man trailing his garments along one side of the mosque. He said, "See who that is. I wish he were here with me."Someone said to him, "Do you not recognize him, Abu Abdul-Rahman? That is Muhammad bin Usama."Ibn Umar lowered his head and tapped the ground with his hands, then said, "Had the Messenger of Allah ﷺ seen him, he would have loved him."
باب حدثني الحسن بن محمد حدثنا أبو عباد يحيى بن عباد حدثنا الماجشون أخبرنا
نظر ابن عمر يوما وهو في المسجد إلى رجل يسحب ثيابه في ناحية من المسجد فقال انظر من هذا ليت هذا عندي قال له إنسان أما تعرف هذا يا أبا عبد الرحمن هذا محمد بن أسامة قال فطأطأ ابن عمر رأسه ونقر بيديه في الأرض ثم قال لو رآه رسول الله ﷺ لأحبه