Certain hypocrites had not accompanied the Holy Prophet (SAWS) in the expedition of Hudaibiyah. After that, when the Muslims resolved to proceed to the battle of Khyber, the Holy Prophet (SAWS) declared that only the participants of Hudaibiyah shall be entitled to accompany him on this journey. The hypocrites who did not go to Hudaibiyah were now interested in their participation in the battle of Khyber, because, according to their anticipation, the Muslims were expected to gain from there sizeable spoils which the hypocrites wanted to share. But the Holy Prophet (SAWS), inspite of their requests, did not allow them to participate in the battle.
This event has been referred to in the following verse of the Holy Quran:
“Those remaining behind will say, when you set forth after spoils to acquire them, ‘Let us follow you’ desiring to change the words of Allah. Say, ‘You shall not follow us; so Allah has said earlier’.” (48:15)
The words in italics indicate that there was a previous word of Allah barring the participation of the hypocrites in the battle of Khyber, and confining the battle to the participants of Hudaibiyah. But no such word exists anywhere in the Holy Quran. It was only a prophetic order. Still, Allah Almighty describes it as His Own word. The
reason is obvious. The Prophetic order was based on the order of Allah received by him through some ‘unrecited revelation’ which is not found in the Holy Quran. Yet, it was a revelation, as certain as any word of Allah.