The holy Qur'an says...
The holy Qur'an says: "And let not those who possess dignity and ease among you swear against giving to the near of kin and the needy, and fugitives for the cause of Allah...." This way of saying shows that a group of those who were involved in 'Ifk were from among the Emigrants in the way of Allah.
They were deceived by hypocrites and because of their past records Allah did not allow them to be ostracized from Islamic society and He did not let the Muslims decide some horrible things about them that were more than the limit they deserved. Meanwhile the Qur'anic holy phrase /la ya'til/ is whether derived from the word /'iliyyah/ (on the rhythm of /'itiyyah/), meaning to take an oath, or from the word /'alw/ (on the rhythm of 'Dalw'), meaning to abandon and to shrink.
Thus, the verse, according to the first meaning, prohibits taking an oath to terminate such helps. And, according to the second meaning, the verse precludes withdrawal of such action. Then to encourage Muslims to continue such good deeds, it adds: "... And they should pardon and overlook...." As we expect Allah's forgiveness, we must not forget to forgive others. The verse continues saying: "... Do you not like that Allah should forgive you?
And Allah is Forgiving, Merciful." It is interesting that, on one hand, the companions of 'Ifk were severely reprimanded, but, on the other hand, to prevent extremists from resorting to measures beyond the norm and to control their feelings, 3 sentences, each of which is more interesting and remarkable than the others, were used: first, it is ordered to be forgiving and condoning. Then it says: "... Do you not like that Allah should forgive you? ...", (so you must forgive).
Finally, two of Allah's attributes that are 'Forgiving' and 'Merciful' are mentioned as an emphasis. It indicates that they could not be more legalistic than Allah's commandment. Allah,Who Himself has issued this judgment, is Forgiving and Merciful. He enjoined them not to terminate the helps, so what did they want to say?
Undoubtedly, all Muslims who were involved in 'Ifk affair did not have a before-hand scheme, but some pseudo-Muslim hypocrites set it and a group of deceived Muslims followed them. Certainly all of them were on the wrong side of the law and were guilty, but there were a lot of differences between these two groups. They could not be treated alike.