وَصَادِقَتَا سَمْعِ التَّوَجُّسِ لِلسُّرَى
لِهَجْسٍ خَفِيٍّ أَوْ لِصَوْتٍ مُنَدِّدِ
Her two ears are dependable in listening attentively during night travel, whether to an almost inaudible stir or to a loudly raised call.
Ṣādiqatā samʿ al-tawajj us describes the two ears as reliable in sensitive, attentive listening. Al-surā means travel by night, a circumstance in which hearing may become especially important.
Hajs khafiyy is a very faint stirring or sound; ṣawt munaddid is a raised voice. By naming both ends of a range, the poet shows the animal can detect subtle and conspicuous sounds.