Sadhvi Naginaji was in Andhra Pradesh. Once during her tour, she had to spend a day in a newly built building, ‘Chatram’, situated on the outskirts of the city. People kept on coming the whole day. When the sun was about to set, they returned to their homes. Neither the followers nor the Kasida (guide) was with the nuns in Chatram. It was a dark night. The place was solitary, and so the nuns closed the door and sat inside. Suddenly five people arrived there and asked the nuns to open the door. The nuns strictly replied that the door would not be opened. The nuns thought that their intention was not good and hence they were frightened. Now the nuns started chanting the Mantra. Those people made their utmost efforts to break the door but failed. The nuns kept on chanting the Mantra, ‘Om Bhikshu’ and because of this Mantra the door became so strong as if it was made of steel.