Khanna passed away at the age of 70 on April 27 after battling cancer.
The prayer meet started around 5:30 PM. Bachchan attended the meet with his family, Abhishek, Aishwarya and daughter Shweta.
Shah Rukh, who recently returned from Vancouver, was present so was Aamir Khan along with his wife, Kiran Rao.
Veteran star Rishi Kapoor had slammed the "actors of this generation" for their absence at Khanna's funeral.
Kapoor, 64, who worked with Khanna in films like "Amar Akbar Anthony" and "Chandni", described the absence of the young generation of stars at the cremation as "shameful".
Among the young actors Athiya Shetty and Sooraj Pancholi were present while Kiara Advani, Mustafa and Naseeruddin Shahs son Vivan were also there.
Also present were Hrithik Roshan, Sonakshi Sinha, Farhan Akhtar, Zoya Akhtar, Arbaaz khan, Tabu and Arjun Rampal.
Other people who attended the meet included, Madhuri Dixit, Hema Malini, Sridevi, Boney Kapoor, Malika Arora Khan, Aditya Pancholi, Satish Kaushik, Ameesha Patel, Ramesh Sippy, Ashutosh Govarikar, Abbas-Mustan, Anurag Kashyap, Farah Khan, Mukesh Bhatt, Pooja Bhatt, Kapil Dev, Sonu Sood, Javed Akhtar, Prem Chopra, Sanjay Khan.
Feature Image Source: Twitter