During one of the Ghazawat in which Messenger of Allah ﷺ was fighting, none remained with the Prophet ﷺ but Talha and Saʿd.
لَمْ يَبْقَ مَعَ النَّبِيِّ ﷺ فِي بَعْضِ تِلْكَ الأَيَّامِ الَّتِي قَاتَلَ فِيهِنَّ رَسُولُ اللَّهِ ﷺ غَيْرُ طَلْحَةَ وَسَعْدٍ عَنْ حَدِيثِهِمَا