Who is the founder of 'Tabligh'?

It is Abu AlQasim (May Allah's peace and blessings be upon him), also known as Muhammed ibn Abdullah ibn Abdul Muttalib ibn Hashim, who is not the father of any man and the seal of the prophets. After receiving the messengership, Muhammed (May Allah's peace and blessings be upon him) conveyed the message of truth to His companions (called the Sahabah), who then brought the message to the rest of the world. It is this work that is, by the grace of Allah, alive and active today. It is by their efforts, May Allah be pleased with them and have mercy upon them, that we are Muslims.