Tabish Sahib writes that someone informed him that in the masjid of Maharashtra college (Bombay) once a jama`at came to conduct lessons/dars. So this man also sat with this group. So the speaker started praising this blessed work of tableegh and what they do until he said “the virtue of this blessed work is such that even if the one who goes out in it’s path and lays his eyes upon a pregnant woman then she will give birth to a WALI due to his seeing”
[Ref: Kitab mazkuraa page 18]
Source: Deobandi Karamaat Blogspot