תּלמוד אויף שופטים 14:1

HALAKHAH: “Simson followed his eyes,” etc. ²⁷⁵Tosephta 3:15, [Num. rabba9(24)]; anonymous Babli 9b, Mekhilta dR. Simeon bar Ioḥai p. 74. It was stated: Rebbi says, because he started going astray at Gaza, therefore his punishment was at Gaza. But is it not written: “Simson descended into Timna²⁷⁶Jud. 14:1. Gaza is mentioned only v. 16:1.”? Rebbi Samuel bar Naḥman said, that was a formal marriage²⁷⁷Marriage is mentioned in Timna, a prostitute in Gaza. It is presumed that the girl from Timna was converted following the rules so that the marriage was not sinful..

But it says, "שמשון went down to תמנת."? The beginning of his downfall, at least, was in Gaza.