(258) بَابُ لا حِلْفَ فِي الإسْلامِ
'Amr ibn Shu'ayb reported via his father that his grandfather,"The Prophet, may Allah bless him and grant him peace, sat down on thesteps of the Ka'ba in the year of Conquest* and praised and glorified Allah.Then he said, 'Whoever is party to an alliance made in the Jahiliyya,Islam only increases its strength. There is no hijra after the Conquest.'"
Reference: Al-Adab Al-Mufrad 570
In-book reference: Book 30, Hadith 33
English translation: Book 30, Hadith 570