The negative impact of weak and feeble stories in Islamic Da'wa and preaching

Some of Islamic preachers are circulate some doubtful hadith or frail Narrations, by their claim that they wants to upgrade the hearts and preach the people, to bring them nearer to Allah and to remind them of the Last Day, to encourage the acts of worship and righteous work, to sharpen the ardor and the determination, and to warning from sins, as some claim that it is admissible if it is a excellence. But they neglects the rigorous conditions of the Scholars who authorized the work of the doubtful hadith, and neglects to look at the text of doubtful hadith whether it is compatible with the holy Quraan and the correct Sunna or not, and then overlooks some of the negative effects of dealing with the doubtful hadith or the frail Narrations, as well as the subject, This study came to shed light on these negative effects on the one hand, with exemplars, and to discuss the idea of working with the doubtful hadith and what the controls of that in brief; To contribute in the dissemination of the culture of investigation and verification of Allah and His Messenger peace be upon him, and good understanding with good work.