The Messenger of Allah ﷺ was brought Hatib bin Abu Balta, and the Messenger of Allah ﷺ said to him, "Did you write this letter?"He replied, "Yes. By Allah, Messenger of Allah, the faith in my heart has not changed. But there was no man from Quraysh except that he had kin and a household to protect his family. I wrote a letter hoping that through it Allah would protect my family."Umar said, "Allow me to deal with him."The Prophet ﷺ asked, "Would you kill him?"Umar said, "Yes, if you permit me."He said, "What do you know? Perhaps Allah has looked upon the people of Badr and said, 'Do as you wish.'"
أن رسول الله ﷺ أتي بحاطب بن أبي بلتعة، فقال له رسول الله ﷺ: أنت كتبت هذا الكتاب؟ قال: نعم، أما والله يا رسول الله، ما تغير الإيمان من قلبي ولكن لم يكن رجل من قريش إلا وله جذم وأهل بيت يمنعون له أهله، وكتبت كتابا رجوت أن يمنع الله بذلك أهلي، فقال عمر: ائذن لي فيه، قال: أو كنت قاتله؟ قال: نعم، إن أذنت لي، قال: وما يدريك لعله قد اطلع الله إلى أهل بدر، فقال: اعملوا ما شئتم.
Abu Bakr bin Abu Shayba narrated it in his Musannaf (37883), Imam Ahmad (5878), and Abu Yaala in his Musnad (5522), all of them from Abu Usama, "Umar bin Hamza told us, Salim told me, Ibn Umar told me, that the Messenger of Allah" ﷺ and he mentioned it. Its isnad is hasan because of what has been said about Umar bin Hamza bin Abdullah Al-Umari, though his hadith is hasan, and he is among the narrators of Muslim.Haythami said in Al-Majma (9/303), "Ahmad and Abu Yaala narrated it in similar fashion, and the narrators of Ahmad are the narrators of the Sahih."