Written by Kausar Munir and sung by Sunidhi Chauhan and Vijay Prakash, 'Tumko Nahin Chhodoongi' has been composed and produced by Salim-Sulaiman.
"I was asked to see the film, and being a woman and a mother, I reacted emotionally to it. Aditya and Prakash asked me to express this reaction in words and make it a voice of a sensitive person," Kausar told reporters here at the launch of 'Mardaani' anthem.
"The emotions of anger, frustration and helplessness came out. Woman are physically weaker than men, that is nature, but the will, the spirit is not," she said.
Rani thinks the lyrics are beautifully written and are very powerful.
The Bengali beauty will be playing the role of a cop in this film which deals with the issue of child trafficking.
"We all women have inner strength which I think men don't have. Men may be physically more powerful and stronger than us but emotionally and mentally we are stronger. I don't think there is anything that a man can do without a woman," Rani said.
Directed by Pradeep Sarkar and produced by her husband Aditya Chopra, the film will release worldwide on August 22.