Matsya Purana 236.4

236.4

ākāśe tūryanādaśca gītagandharvanisvanāḥ.
kāṣṭhadarvī-kuṭhārādi vikāraṃ kurute yadi .. 236.3 ..

The drums and other sounding instruments not giving any sound when beat or struck or emitting sounds without being struck, the moving of the immovables, the not going of the movable objects when made to move, the sound of the drums, etc., coming from the sky as well as the singing of the Gandharvas, the wooden ladles, axes, etc undergoing unusual changes, cows fighting among themselves with their tails cocked up and women kill women and changes occur in young ones, these indicate a war.—2-4.