Shaikh Abdullaah Al-Bukhaari (may Allaah preserve him) said about Shaikh Jameel Ar-Rahmaan (rahimahullaah)

He was scholar and a teacher; active in calling to the Book and the Sunnah; (manifesting) opposition against Bidah and waging war against it; making every endeavour to manifest Tawheed and the Sunnah. He spoke a little, kept quiet a lot and reflected much.  A person of (good) ettiquetes, lofty manners alongside a great deal of humility; (a person) of careful thought and consideration; a worshiper, (a man) of abstinence (from the permissible but unnecessary worldly things) and eager in spreading Sunni-Salafi learning….[Abridged and slightly paraphrased. see link: http://www.elbukhari.com/node/31]