Tactic in Najdorf Sicilian

In a rapid game played a few days ago, I missed this chance:

Chigorin Club – UBC Club, 2013

 White to move 

I took on f6, played Nd5, and the position got murky, as both kings lost the chance to castle.

12. Bb5+ ! gave White a great position. After 12… Nc6 13. Bxf6 gxf6 14. Nd5! makes it clear who’s in charge here:

White dominates the position and all the key squares.