Why did Samsun attack Ashkelon and take their shirts?

ANSWER

To give to those who had solved his riddle

Judges 14 :

19 Then the Spirit of the LORD came powerfully upon him. He went down to Ashkelon, struck down thirty of their men, stripped them of everything and gave their clothes to those who had explained the riddle. Burning with anger, he returned to his father’s home. 20 And Samson’s wife was given to one of his companions who had attended him at the feast.
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