"You f***** up and you are going to take the rap for this," Smokey said to Mr Yacoub.
Mr Yacoub was told he would be taken to a lawyer's office where he would make a statement accepting responsibility for pills found by police in Slaimankhel's possession.
Mr Yacoub refused and was told by Smokey that he knew where he lived and the identity of his friends and family.
The court was shown CCTV footage from the Burger King of Mr Yacoub meeting with the three men and of all four leaving together.
Mr Yacoub testified that he was taken to the office of Slaimankhel's lawyer, Isaac Koya. Slaimankhel whispered what to say in his ear while Mr Koya used his computer to record the statement. Several times during the process Mr Koya laughed and said "let the boy speak".
Smokey continued to threaten him while he made the statement, telling him repeatedly in a low, aggressive voice that he had "been a naughty boy".
"It kept going through my mind that he knew where my family were," Mr Yacoub testified.
Slaimankhel's defence counsel Mark Ryan accused Mr Yacoub of being a drug dealer.
"That's what you are Mr Yacoub you are a drug dealer, correct?" Mr Ryan said during cross examination.
"No." Mr Yacoub said.
Mr Yacoub denied selling steroids but said he had bought them off Slaimankhel and Law.
Mr Ryan pointed out that Mr Yacoub had admitted in a previous trial he had sold steroids before.
"Can you give me any reason why there's a difference in your evidence before this jury and what you told a previous jury?" Mr Ryan asked.
"I don't have to answer that," Mr Yacoub replied.
"Can you explain why you told one jury something on oath and yet you've told a different version to this jury on oath?" Mr Ryan asked.
"I don't have to answer that."
"So you are still selling steroids and supplying steroids, aren't you Mr Yacoub?"
"I don't have to answer that," Mr Yacoub said.