Editor's note: In his masterpiece, Ihya 'Ulum al-Din, Imam al-Ghazali writes passionately about the evils of not acting on knowledge and the signs of the 'ulama of the hereafter. A condensed version of this lengthy passage was rendered into Urdu by Shaykh al-Hadith Mawlana Muhammad Zakariyya Kandhalawi and produced in part two of Fada'il-i-Sadaqat, which was subsequently translated from Urdu into English by M. Tayyab Bakhsh Badayuni.These twelve signs have, under the instructions of Dr. Hanif Kamal, been edited and are now being reproduced on Deoband.org; this is primarily for the benefit of the editor, the 'ulama in general, and - since we live in confusing and delicate times - for the general lay populace to allow them to identify the true inheritors of the prophets (peace be upon them).I pray Allah Most High grants us all, through His divine accordance, the correct understanding of His din, the ability to live according to His noble wishes and desires, and acceptance to serve His din with sincerity. - Ismaeel Nakhuda