The Prophet ﷺ appointed Usama as the commander of the troops (to be sent to Syria). The Muslims spoke about Usama (unfavorably ). The Prophet ﷺ said, " I have been informed that you spoke about Usama. (Let it be known that ) he is the most beloved of all people to me."
عَنْ أَبِيهِ اسْتَعْمَلَ النَّبِيُّ ﷺ أُسَامَةَ فَقَالُوا فِيهِ فَقَالَ النَّبِيُّ ﷺ قَدْ بَلَغَنِي أَنَّكُمْ قُلْتُمْ فِي أُسَامَةَ وَإِنَّهُ أَحَبُّ النَّاسِ إِلَىَّ