As for those who attained to faith and did righteous works and believed in what was revealed to Muhammad - which indeed is the Truth from their Lord - Allah has remitted their evil deeds and has set their condition right.   (Quran 47:2)

Introduction to Islam and Beliefs

Introduction to Islam
1. Towards Understanding Islam [pg.86] (Ref: Al-Islamforall.org)
Articles of Faith
1. Articles of Faith [pg.18] (Ministry of Islamic Affairs, KSA, Al-Islam.com)
2. Names of Allah [pg.46] (Ref:Imaan.net)
3. The Message of the Prophet’s Seerat [pg.11] (Ref: Witness-pioneer.org)
4. Life after Death [pg.6] (Ref: Al-Islamforall.org)