Many religiously observant men I've met, irrespective of their 'edah (cultural persuasion, e.g. Ashkenazi, Sefaradi, Teimani), have shaken my hand more loosely than secular or Gentile men (who generally tend toward a firmer handshake in my experience).
Is there a halakhic/hashqafic reasoning/source behind this?
Social/comedic sources giving anecdotal evidence to the trend:
- "What kind of handshake do you give?" (Frum Satire)
- "What's in a (Jewish) Handshake?" (The Muqata)