Bab Al-Rayan
The name of one of the gates of Heavens (Jannat) through which the people who often observe fasting will enter on the Day of Judgement.
Badr
Site of the first great battle between Prophet Muhammad (S.A.W.) and the pagans of the Quraish in 2 A.H. Badr is located about 150 kilometers south of Madinah (Saudi Arabia). The Muslim army consisted of 313 men and the Quraish had a total of about 1,000 soldiers, archers and horsemen. See Holy Quran, Al-Anfal (8:5-19, 42-48), Ale Imran (3:13).
Barzakh
Literally means partition or barrier.
In Islamic terminology it usually means the life in the grave, because the life in the grave is the interspace between the life on earth and the life in the Hereafter. Life in the Barzakh is real, but very different from life as we know it. Its exact nature is known only to Allah. It is during our life in the Barzakh that we will be asked about Allah, our faith and the Prophet Muhammad (S.A.W.). We will also be shown Heaven (Jannat) and Hell (Jahannam) and which of these two places we will occupy after we are judged.
Bid'a
Any practice invented and then claimed that it is Islamic when it is not. Prophet Muhammad (S.A.W.) said that every Bid'a is a deviation from the true path and every deviation leads to Hellfire.
Bismillah-ir-Rahman-ir-Rahim
"In the name of Allah, the Most Kind, the Most Mericful."
This utterance is usually made by every Muslim who is about to embark on something lawful (Halal), regardless of the magnitude of the task. This is also the first verse of Surah Al-Fatehah (Chapter 1) of the Holy Quran.