"Narrated Hisham’s father: Khadija died three years before the Prophet departed to Medina. He stayed there for two years or so and then he married ‘Aisha when she was a girl of six years of age, and he consummated that marriage when she was nine years old." Bukhari vol.5 book 58 (The Merits of the Ansar) ch.43 no.236 p.153.
"Baba ya Hisham alisimulia: Khadija miaka mitatu kabla Nabii hajaondoka kwenda Madina. Alikaa huko miaka miwili hivi na kisha alimuoa ‘Aisha alipokuwa binti wa miaka sita, na aliikamilisha ndoa hiyo kwa ngono binti alipokuwa na miaka tisa." Bukhari juzuu ya 5 kitabu cha 58 (Matendo Mema ya Ansar) sura ya 43 na.236 uk.153.