Burst
Srimad-Bhagavatam
SB Canto 2
SB 2.2.21, Purport:
The life air passes through seven openings, namely two eyes, two nostrils, two ears and one mouth. Generally it passes through the mouth at the time of an ordinary man's death. But the yogī, as above mentioned, who controls the life air in his own way, generally releases the life air by puncturing the cerebral hole in the head. The yogī therefore blocks up all the above-mentioned seven openings, so that the life air will naturally burst forth through the cerebral hole. This is the sure sign of a great devotee's leaving the material connection.