Sayyidi wa sanadi Hazrat Mufti Mohammad Taqi Usmani sahib db said while explaining the hadith of Sahih Bukhari, volume 1, chapter 37, number 104,

“Irrespective of the degree of corruptness of an individual and the severity of the mistake he may be committing when it comes to rendering advice or calling him towards the religion, the attitude adopted must not be heartbreaking. Moreover it should take into consideration the status of that person.”

Inamul Bari, volume 2, page 149