ٱنفِرُوا۟ خِفَافًا وَثِقَالًا وَجَٰهِدُوا۟ بِأَمْوَٰلِكُمْ وَأَنفُسِكُمْ فِى سَبِيلِ ٱللَّهِ ۚ ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ
8:75; 9:88, 111; 61:12.
Commentary:
Muslims are here commanded to march forth in the way of God, allowing no worldly consideration or impediment to prevent them from doing so. The words خفافا و ثقالا (light and heavy) have several meanings, i.e. whether you are young or old; alone or in parties; on foot or on horseback; with sufficient arms and provisions or with insufficient arms and provisions or with insufficient equipment and scanty provisions, etc.
8:75; 9:88, 111; 61:12.
The words "light or heavy" may mean, young or old; alone or in parties; on foot or on horseback; with sufficient arms and provisions or with insufficient equipment and scanty provisions, etc.