(Yes, indeed.) I said, `Isn't our cause just and the cause of the enemy unjust' He said,
(Yes.)I said, `Then why should we be humble in our religion' He said,
«إِنِّي رَسُولُ اللهِ وَلَسْتُ أَعْصِيهِ وَهُوَ نَاصِرِي»
(I am Allah's Messenger and I do not disobey Him, and He will make me victorious.)
In another narration:
«يَا ابْنَ الْخَطَّابِ إِنِّي رَسُولُ اللهِ وَلَنْ يُضَيِّعَنِي اللهُ أَبَدًا»
(O son of Al-Khattab! I am Allah's Messenger and He will never abandon me. )
I said, `Didn't you tell us that we would go to the Ka`bah and perform Tawaf around it' He said,
«بَلَى أَفَأَخْبَرْتُكَ أَنَّا نَأْتِيهِ الْعَامَ؟»
(Yes, but did I tell you that we would visit the Ka`bah this year) I said, `No.' He said,
«فَإِنَّكَ آتِيهِ وَمُطَّوِّفٌ بِه»
(So you will visit it and perform Tawaf around it.)`Umar further said, `I went to Abu Bakr and said: O Abu Bakr! Isn't he truly Allah's Prophet' He replied, `Yes.' I said, `Is not our cause just and the cause of our enemy unjust' He said, `Yes.' I said, `Then why should we be humble in our religion' He said, `O you man! Indeed, he is Allah's Messenger and he does not disobey his Lord, and He will make him victorious. Adhere to him for, by Allah, he is on the right path.'
I said, `Was he not telling us that we would go to the Ka`bah and perform Tawaf around it' He said, `Yes, but did he tell you that you would go to the Ka`bah this year' I said, `No.' He said, `You will go to the Ka`bah and perform Tawaf around it.'
Az-Zuhri said, "`Umar, may Allah be pleased with him, said, `I performed many good deeds as expiation for the improper questions I asked them.' '' "
When the writing of the peace treaty was concluded, Allah's Messenger said to his Companions,
«قُومُوا فَانْحَرُوا ثُمَّ احْلِقُوا»
(Get up and slaughter your sacrifices and have your heads shaved.)By Allah none of them got up, and the Prophet repeated his order thrice. When none of them got up, he left them and went to Umm Salamah and told her of the people's attitudes towards him.
Umm Salamah said, `O Prophet of Allah! Do you want your order to be carried out Go out and don't say a word to anybody until you have slaughtered your sacrifice and call your barber to shave your head.'
The Messenger of Allah went out and did not talk to anyone until he did what she suggested, slaughtered the sacrifice and shaved his head. Seeing that, the Companions got up, slaughtered their sacrifices, and started shaving the heads of one another. There was so much of a rush -- and sadness -- that there was a danger of killing each other [i.e. the blades were about to cut each others heads when shaving out of such uncontrollable sadness. Allahu a'lam]. Then some believing women came and Allah the Exalted and most Honored revealed the following Ayat,
[يأَيُّهَا الَّذِينَ ءَامَنُواْ إِذَا جَآءَكُمُ الْمُؤْمِنَـتُ]
(O you who believe! When believing women come to you) (60:10)*, until,
[بِعِصَمِ الْكَوَافِرِ](Likewise hold not the disbelieving women as wives.)
`Umar then divorced two of his wives, who were disbelievers. Later on Mu`awiyah bin Abu Sufyan married one of them, and Safwan bin Umayyah married the other.
Surah al Fath - Tafsir ibn Kathir
*Full verse [meaning];
O ye who believe! When there come to you believing women refugees, examine (and test) them: Allah knows best as to their Faith: if ye ascertain that they are Believers, then send them not back to the Unbelievers. They are not lawful (wives) for the Unbelievers, nor are the (Unbelievers) lawful (husbands) for them. But pay the Unbelievers what they have spent (on their dower), and there will be no blame on you if ye marry them on payment of their dower to them.
But hold not to the guardianship of unbelieving women: ask for what ye have spent on their dowers, and let the (Unbelievers) ask for what they have spent (on the dowers of women who come over to you). Such is the command of Allah: He judges (with justice) between you. And Allah is Full of Knowledge and Wisdom.
(Quran Mumtahinah 60:10)