Additional Sessions Judge Sidharth Singh remanded the accused in custody for a fortnight after the special cell of Delhi police said he was required for interrogation.
Ali's name, along with that of 11 others, was disclosed by Syed Anzar Shah and four others -- Mohd Asif, Zafar Masood, Mohd Abdul Rehman and Abdul Sami -- arrested in the case earlier.
The plea was, however, opposed by advocate M S Khan, appearing for the accused.
The Delhi Police's Special Cell had yesterday arrested Ali whom they were searching for over a year, ever since three alleged AQIS (Al-Qaeda in the Indian Subcontinent) operatives were arrested in 2015.