Sahih Bukhari
Merits of the Helpers in Madinah (Ansaar)
Volume: 005 / Book Number: 058 / Hadith Number: 229
Narrated 'Abdullah bin Ka'b:
Who was Kab's guide when Ka'b turned blind: I heard Ka'b bin Malik narrating: When he remained behind (i.e. did not Join) the Prophet in the Ghazwa of Tabuk. Ibn Bukair, in his narration stated that Ka'b said, " I witnessed the Al-'Aqaba pledge of allegiance at night with the Prophet when we jointly agreed to support Islam with all our efforts I would not like to have attended the Badr battle instead of that 'Aqaba pledge although Badr is more well-known than it, amongst the people."