Nageswara Rao had completed all the shooting but for one song.
"The film spans a period from 1920 to 2013. My father plays a 90-year old. Except that incomplete song he completed all the shooting," he posted.
"Fifteen days after surgery he was at home in bed when he said, 'Bring all the dubbing equipment and do my dubbing for Manam before I get worse, or you will get a mimicry artiste to do my dubbing. He made sure we he completed the film. It's now being released on March 31st," Nagarjuna further posted.
Directed by Vikram Kumar, Manam also features Nagarjuna and his son Akkineni Naga Chaitanya. It's the first time actors from three generations of Akkineni clan worked together.