Formation : Muhammad Naasiruddeen al-Albaanee
Source : http://www.islamhouse.com/p/1273
From issues : Al-Haramain Foundation
Source : http://www.islamhouse.com/p/1291
Formation : Abu Ameenah Bilal Philips
Source : http://www.islamhouse.com/p/291542
From issues : Islamic Propagation Office in Rabwah
Source : http://www.islamhouse.com/p/1239
Formation : Sayid Sabiq
Source : http://www.islamhouse.com/p/1395