انفِرُوا خِفَافًا وَثِقَالًا وَجَاهِدُوا بِأَمْوَالِكُمْ وَأَنفُسِكُمْ فِي سَبِيلِ اللَّهِ ۚ ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ (41)
(9:41) March forth whether you be light or heavy, *43 and exert your utmost in Allah's Way with your possessions and your lives: this is best for you, if you but know it.
*43) The words ".... whether you are light or heavy ..." have a very comprehensive meaning: "When it is enjoined to march forth for Jihad, you must go forth anyhow, whether you like it or not: whether you are in a state of prosperity or indigence: whether you are well-equipped or ill-equipped: whether the circumstances are favourable or adverse: whether you are young and healthy or old and weak. "