Urwah (may Allah have mercy on him) narrates from Miswar bin Makhramah and Marwan bin al-Hakam (may Allah be pleased with them both) that it is recorded in (the account of) al-Hudaybiyyah that when the Messenger of Allah (peace and blessings be upon him) turned back and was still between Makkah and Madinah, Surah al-Fath was revealed in full: "Indeed, We have granted you a clear victory" [Surah al-Fath: 1]. This decision is in Surah al-Fath, namely the Companions' pledge to the Messenger of Allah (peace and blessings be upon him) beneath the tree. When all the people came to be at peace, no one spoke about Islam, but whoever heard about Islam would certainly accept it. Within those two years more people entered Islam, and the Treaty of al-Hudaybiyyah was a great victory.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجزية / 18814