The Prophet ﷺ said: He who does not join the warlike expedition (jihad), or equip, or looks well after a warrior's family when he is away, will be smitten by Allah with a sudden calamity. Yazid ibn Abdu Rabbihi said in his tradition: 'before the Day of Resurrection". (Using translation from Abū Dāʾūd 2503)
أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ لَمْ يَغْزُ أَوْ لَمْ يُجَهِّزْ غَازِيًا أَوْ يَخْلُفْ غَازِيًا فِي أَهْلِهِ بِخَيْرٍ أَصَابَهُ اللهُ بِقَارِعَةٍ قَالَ يَزِيدُ فِي حَدِيثِهِ قَبْلَ يَوْمِ الْقِيَامَةِ