﴿ ۞ قَدْ يَعْلَمُ ٱللَّهُ ٱلْمُعَوِّقِينَ مِنكُمْ وَٱلْقَآئِلِينَ لِإِخْوَٰنِهِمْ هَلُمَّ إِلَيْنَا ۖ وَلَا يَأْتُونَ ٱلْبَأْسَ إِلَّا قَلِيلًا ﴾

“God is indeed aware of those of you who would divert others [from fighting in His cause], as well as of those who say to their brethren, “Come hither to us [and face the enemy]!” — The while they [themselves] join battle but seldom,”

Please check ayah 33:19 for complete tafsir.