Sloka:

After slaying the suicide-squads called Samsapthakas , the Arjuna who returned happily in his chariot driven by Lord Krishna, suddenly started feeling uneasy for unknown reasons. He then asks  Lord Krishna thus

Dear Keshava, who always has compassion to devotees, my mind is restless and worried for no reason.

My left eye-brow is twitching incessantly (a bad omen according to Indian belief), my voice is shattering, I am losing my courage.  (I am seeing bad omens)

Dear Friend, who is omniscient, please tell me, if any of my brothers have met with a mishap