Allah then mentions the legal reasons that allow one to be excused from joining the Jihad, such as blindness and being lame, and various illnesses that strike one and are remedied in few days. When one is ill, he is allowed to remain behind and will have a valid excuse to do so, until his illness ends. Allah the Exalted and Most honored then said, while ordaining joining the Jihad and obeying Allah and His Messenger ,

﴿وَمَن يُطِعِ اللَّهَ وَرَسُولَهُ يُدْخِلْهُ جَنَّـتٍ تَجْرِى مِن تَحْتِهَا الاٌّنْهَـرُ وَمَن يَتَوَلَّ﴾

(And whosoever obeys Allah and His Messenger, He will admit him to Gardens beneath which rivers flow; and whosoever turns back,) from joining the Jihad and busies himself in his livelihood,

﴿يُعَذِّبْهُ عَذَاباً أَلِيماً﴾

(He will punish him with a painful torment.) in this life with humiliation and in the Hereafter with the Fire. Allah the Exalted has the best knowledge.

﴿لَّقَدْ رَضِيَ اللَّهُ عَنِ الْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ الشَّجَرَةِ فَعَلِمَ مَا فِى قُلُوبِهِمْ فَأنزَلَ السَّكِينَةَ عَلَيْهِمْ وَأَثَـبَهُمْ فَتْحاً قَرِيباً - وَمَغَانِمَ كَثِيرَةً يَأْخُذُونَهَا وَكَان اللَّهُ عَزِيزاً حَكِيماً ﴾

(18. Indeed, Allah was pleased with the believers when they gave the pledge to you under the tree, He knew what was in their hearts, and He sent down As-Sakinah upon them, and He rewarded them with a near victory. ) (19. And abundant spoils that they will capture. And Allah is Ever All-Mighty, All-Wise.)