Bismillahir Rahmanir Rahim Assalamu Alaikum, dear brothers, sisters and friends. Professor. Khandaker A.N.M. Abdullah Jahangir's famous book "Da'wah in the way of Allah". Calling to the way of Allah is the greatest deed. Because it is the responsibility of the prophets and messengers. And the Prophets were the greatest of human beings. Calling to the way of Allah shows the way to know Allah and the Prophet. Not only that, but Allah Himself has praised this deed. He said, "Who is better in words than the one who calls to the way of Allah and does righteous deeds?" There are some valuable discussions about medicine in the text, which I hope will benefit everyone. All the pages of this book are highlighted in this app. I published the whole book for free for the Muslim brothers who could not afford it. Hope you will encourage us with your valuable comments and ratings.