Actor Nawazuddin Siddiqui says Amitabh Bachchan's compliment to him means everything as he has learnt a lot from the megastar.

Recently, Bachchan had complimented the "Bajrangi Bhaijaan" star with whom he shares screen space in "Te3n".

When asked about this, Nawazuddin told reporters here, "I felt good. I couldn't attend the the trailer launch (of 'Te3n') as I was shooting in Pune. Bachchan saab (Amitabh Bachchan) has complimented me, what can be bigger than this. I've learnt a lot from him, during shooting and even otherwise."

The 41-year-old actor was speaking at the trailer launch of "Raman Raghav 2.0".The film, directed by Anurag Kashyap, stars Nawazuddin as a serial killer while Vicky Kaushal plays the role of a cop.

The film, slated to release on June 24, is inspired by Raman Raghav, also known as Psycho Raman, a psychopathic serial killer who terrorised the streets of Mumbai in the mid-1960s.

Nawazuddin says it was a challenge for him to play the role perfectly as it is a tricky character.

"The challenge was if I could do it perfectly. It is not a normal character. He has his own philosophies, thoughts. There are many things in our society which we think is wrong but for him it is right," he added.

"To go inside such a brain is very difficult. You can do justice to such a character only if you believe in this theory," Nawazuddin added.