Ibn Taymiyyah said: "This (enjoining good and forbidding evil) is a duty that the entire Ummah is obliged to fulfil. It is what the Ulama know as an obligation of collective responsibility, if a group in society undertook to discharge it, the other members of this society are absolved from it. The entire Ummah is commissioned to undertake it, but if a group therein was responsible for discharging it, the rest of society is no longer obliged to undertake it."
Author: Sheikh-ul-Islam ibn Taymiyyah
Reveiwers: Muhammad AbdulRaoof
Translators: Salim Abdullah Marjan
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
Bulugh Al-Maram (attainment of the objective according to the evidence of the ordinances) is based upon the Ahadith of our Prophet which have been the sources of Islamic Jurisprudence. Al-Hafiz Ibn Hajar Al-Asqalani has recorded the true significance of the Ahadith and their origins & also made a comparison of the versions, if the sources are more than one.
Author: Ibn Hajar Al-Asqalani
One Hundred famous Weak or Fabricated Traditions attributed to the Prophet.
Author: Ihsan Al-Utaibi
The author said in its introduction, "Nothing offends more the Christians than to cast doubt about the doctrine of the Trinity, the fountainhead of their faith. Since I grew up as a Christian, I know by heart that it will surely injure a devout follower of Christianity something he knew as true. But to lend a blind eye when I know better is far from righteousness since I am bound by the God's Commandments to guide those mislead by the false doctrine. It is a basic right of every individual to know the truth that will lead him to the right path.
The author said in his introduction: This work comprises a short introduction to the history of the Quran, its recording and its collection. The reader may therefore be puzzled as to why one third of the material in this book tackles the Old Testament (OT) and the New Testament (NT), wondering what significance this has on the Quran’s history. This significance shall, I hope, be made clear as the chapters progress, since I have attempted to present only those details which have a direct bearing on the current subject matter.
Author: Muhammad Mustafa A'zami