A fellow knocks on the door and tells you he’s raising money for a worthy cause. Your suspicions are immediately raised for some reason. Maybe it's the color photocopy of someone else's Vaad certificate that expired in 2009, maybe it's the BMW you saw him park around the corner, maybe it's the fact that you're pretty sure the hat he's wearing was stolen from the Yeshiva coatroom (because it was your hat...), whatever it is, you’re sure he's a faker. Not wanting to start a confrontation, you figure it's worth a buck to get him away from you. You reach into your pocket for a dollar... In this episode we study a fascinating psak from R Shlomo Zalman Aurbach based on this week's Parsha.