Muhammad's life
from call to Hijra
610 CE: Beginning of Revelation
    Qur'an 96: 1-5

613 CE: Beginning of public preaching, leading to persecutions
    "Arise and warn" Qur'an 74: 1-5

614 CE: (?) First martyr in Islam: Sumayya, mother of `Ammar b. Yasir
614 CE: Hamza b. `Abdu'l-Muttalib accepts Islam
615 CE: Emigration to Abyssinia / Ethiopia, ruled by Christian ruler (Negus or al-Najjash)
616 CE: `Umar b. al-Khattab accepts Islam
616 - 18 CE: Boycott against the clan of Muhammad, the Banu Hashim

(b/w 615-19: "Satanic Verses" episode)
619 CE: "Year of Sadness" Khadijah and Abu Talib die
620 CE: Isra' and Mi'raj (Night-Journey and Ascent to Heaven)
    Cf: Qur'an 17: 1-2
    Miraculous travel from Mecca to Jerusalem, ascent to Heaven in one night

620 CE: First converts from Yathrib (Medina)
621 CE: (June) Pledge at `Aqabah, hill outside Mecca: 12 men from Yathrib convert
622 CE: (June) 2nd Pledge at `Aqabah: 73 men and 2 women from Yathrib convert
622 CE: (July-) The Hijra. beginning of the Muslim calendar / era
    Muhammad arrives in Medina on September 17th, 622.