Silk merchant

Were you looking for the Silk Trader in Al-Kharid?

The Silk Merchant is a non-player character in East Ardougne that buys silk. You cannot sell him silk if you have recently stolen from his stall. The Silk Merchant will remember thieves for about five minutes, but time spent while logged out does not count.

Stealing silk is sometimes considered the best way to train Thieving for low levels.