﴿ سَيَقُولُ ٱلْمُخَلَّفُونَ إِذَا ٱنطَلَقْتُمْ إِلَىٰ مَغَانِمَ لِتَأْخُذُوهَا ذَرُونَا نَتَّبِعْكُمْ ۖ يُرِيدُونَ أَن يُبَدِّلُوا۟ كَلَٰمَ ٱللَّهِ ۚ قُل لَّن تَتَّبِعُونَا كَذَٰلِكُمْ قَالَ ٱللَّهُ مِن قَبْلُ ۖ فَسَيَقُولُونَ بَلْ تَحْسُدُونَنَا ۚ بَلْ كَانُوا۟ لَا يَفْقَهُونَ إِلَّا قَلِيلًۭا ﴾

“As soon as you [O believers] are about to set forth on a war that promises booty, those who stayed behind [aforetime] will surely say, “Allow us to go with you” - [thus showing that] they would like to alter the Word of God. Say: “By no means shall you go with us: God has declared aforetime [to whom all spoils shall belong].” Thereupon they will [surely] answer, “Nay, but you begrudge us [our share of booty]!” Nay, they can grasp but so little of the truth!”

Before the Hudaybiyyah Treaty the Jews were very open in their hostility for the Muslims, because earlier they had had the full cooperation of Quraysh in this regard. The ‘no-war’ pact with the Quraysh at Hudaybiyyah cut off the Jews from the Quraysh and thereafter they were left on their own. For this reason, the morale of the Jews of Khybar, Tema, Fidak, etc. was lowered. So, three months after the signing of the treaty, when the Prophet besieged Khybar, the Jews of that place surrendered their arms without fighting and the Muslims acquired large amounts of booty on that occasion. People of weak faith who did not accompany the Prophet on his Hudaybiyyah journey, considering it risky, now wanted to take part in the campaign against the Jews and thus have a share in the spoils, but they were prohibited from doing so. It is the rule of God that it is the one who takes risks who should receive the benefit. If a man wants to achieve something without taking a risk, he wants, in fact, to change Divine Law. But it is not possible for anybody in this world to change God’s Law.