Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that this verse « إِنكَانَبِكُمْأَذًىمِّنمَّطَرٍأَوْكُنتُممَّرْضَىٰأَنتَضَعُواأَسْلِحَتَكُمْ »[ سورة النساء : 102 ] "If you are troubled because of rain or you are ill (then pray after putting down your weapons)" was revealed at the time when Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him) was wounded.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب صلاة الخوف / 1369