He described Aamir as someone with "great aspirations and great ambition" who had a fantastic memory.
Aamir Siddiqi innocently answered his door expecting to see his local imam for a Koran lesson.
Mr Richards and Mr Hope deny murdering Aamir and attempting to murder his parents.
When the doorbell rang on a normal April Sunday afternoon, 17-year-old schoolboy Aamir Siddiqi volunteered to answer.
The court was told how a passer-by heard screaming and saw Aamir's parents crying out for help.
BBC: Aamir Siddiqi: Defendant seen on CCTV 'spending proceeds'
At the same time, they inflicted very serious injury on Aamir's parents as they tried to protect him.
Mrs Ahmad also described in the interview with police, the joy Aamir's birth had brought to the family.
BBC: Aamir Siddiqi: Mum on opening door to 'bungling hitmen'
Aamir's mother could see the person on the other side of the door putting something over their head.
Paramedics arrived 20 minutes after the 999 call and took over, continuing with attempts to save Aamir's life.
BBC: Aamir Siddiqi: Defendant seen on CCTV 'spending proceeds'
Patrick Harrington QC, prosecuting, said Aamir Siddiqi died from three stab wounds, one of which was five inches deep.
BBC: Aamir Siddiqi: Defendant seen on CCTV 'spending proceeds'
"I saw the face of Aamir's mum, she looked absolutely traumatised, " he said.
BBC: Aamir Siddiqi: Hitmen Jason Richards and Ben Hope guilty
On that day, Aamir was expecting to have a lesson from the imam.
Police used CCTV evidence to track the movements of Richards and Hope following their fatal attack on innocent teenager, Aamir.
Aamir ran downstairs offering to open the door - a decision which devastated the family and cost the youngster his life.
It was, said Mr Harrington, a colossal and fatal mistake for Aamir, who was hoping to study law at Cardiff University.
BBC: Aamir Siddiqi Cardiff murder jury resumes deliberations
Aamir's father Iqbal Ahmad told how he and his wife, Parveen, were also injured while trying to fight off two attackers.
BBC: Aamir Siddiqi murder: Co-accused Ben Hope denies killing
Ironically, coach Javed Miandad and chief selector Aamir Sohail barely see eye-to-eye.
Family friend Sher Ali, president of the Cardiff branch of the UK Islamic Mission, had known Aamir since he was a boy.
She and her husband, who had stayed over the previous night, had not long left to pick up a takeaway for Aamir.
The jury in the Aamir Siddiqi murder trial has been told that a third person must have been involved in the killing.
Aamir's head teacher at his school, the private Cardiff Academy for GCSE and A-level students, remembers a lovely pupil who was very academically gifted.
He said the incident 17 years ago still haunts him and he was horrified, but not surprised, to learn Richards had murdered Aamir Siddiqi.
Bollywood stars like Kareena Kapoor and Aamir Khan have embraced the service and can leave audio updates for their followers in India.
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Aamir was home with his mother Parveen and his father Iqbal.
The court has heard that just before he died, Aamir had been upstairs in his bedroom awaiting the arrival of an imam for a Koran lesson.
BBC: Aamir Siddiqi murder: Co-accused Ben Hope denies killing
The time an Indian nomination to have achieved some success was in 2001 when global blockbuster Lagaan (Tax), starring Aamir Khan, made it to the top five.
The court has heard how both parents were slashed as they put up a fierce and frantic fight to try to stop the men repeatedly stabbing Aamir.
BBC: Aamir Siddiqi: Mum on opening door to 'bungling hitmen'
Mr Kidwai was one of a number of Aamir's friends who organised a football match in honour of the sport-mad teenager in the period after his death.
Jason Richards told Swansea Crown Court he did not murder Aamir Siddiqi, 17, and also denies trying to murder his parents who tried to protect their son.
The court has heard that just before he died, promising student Aamir had been upstairs in his bedroom awaiting the arrival of an imam for a Koran lesson.
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