In the year of the Conquest, Abbas bin Abdul-Muttalib brought Abu Sufyan bin Harb to the Messenger of Allah ﷺ, and he accepted Islam at Marr al-Zahran.Abbas said, "Messenger of Allah, Abu Sufyan is a man who loves honor, so grant him something."He replied, "Yes. Whoever enters the house of Abu Sufyan is safe, and whoever shuts his door upon himself is safe."
أن رسول الله ﷺ عام الفتح جاءه العباس بن عبد المطلب بأبي سفيان بن حرب فأسلم بمر الظهران، فقال له العباس: يا رسول الله إن أبا سفيان رجل يحب هذا الفخر فلو جعلت له شيئا، قال: نعم، من دخل دار أبي سفيان فهو آمن، ومن أغلق عليه بابه فهو آمن.
Abu Dawud (3021) and Bayhaqi in Dalail (5/31) both narrated it from the hadith of Muhammad bin Ishaq, from Zuhri, from Ubaydullah bin Abdullah bin Utba, from Ibn Abbas, and he mentioned it. Its chain of transmission is hasan because of Muhammad bin Ishaq.Waqidi said, the Messenger of Allah ﷺ camped his army at the well of Abu Anaba, and he tied the banners and flags. Among the Migrants there were three flags, a flag with Zubayr, a flag with Ali, and a flag with Saad bin Abu Waqqas. Among the Aws, in Banu Abdul-Ashhal there was a flag with Abu Naila, in Banu Zafar a flag with Qatada bin Numan, in Banu Haritha a flag with Abu Burda bin Niyar, in Banu Muawiya a flag with Jabr bin Utayk, in Banu Khatma a flag with Abu Lubaba bin Abdul-Mundhir, in Banu Umaya a flag with Mubayyid, in Banu Saada a flag with Abu Usayd Saadi, in Banu Harith bin Khazraj a flag with Abdullah bin Zayd, in Banu Salama a flag with Qutba bin Amir bin Hudayda, in Banu Malik bin Najjar a flag with Umara bin Hazm, in Banu Mazin a flag with Sulayt bin Qays, and in Banu Dinar a flag carried by (blank). Maghazi of Waqidi (2/800).