Those who lagged behind (will say), when ye (are free to) march and take booty (in war): "Permit us to follow you." They wish to change Allah's decree: Say: "Not thus will ye follow us: Allah has already declared (this) beforehand": then they will say, "But ye are jealous of us." Nay, but little do they understand (such things). Al-Fath 48:15 ⧉
Tafsir:
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.