So while he slept, Delilah took the seven braids of his hair and wove them into the web. Then she tightened it with a pin and called to him, "Samson, the Philistines are here!" But he awoke from his sleep and pulled out the pin with the loom and the web.

Judges 16:13
Then Delilah said to Samson, "You have mocked me and lied to me all along! Tell me how you can be tied up." He told her, "If you weave the seven braids of my head into the web of a loom and tighten it with a pin, I will become as weak as any other man."

Judges 16:15
"How can you say, 'I love you,'" she asked, "when your heart is not with me? This is the third time you have mocked me and failed to reveal to me the source of your great strength!"

And she fastened it with the pin, and said to him, The Philistines be on you, Samson. And he awaked out of his sleep, and went away with the pin of the beam, and with the web.