Valmiki Ramayana Ayodhya Kanda Sarga 63 Shloka 13

अन्यः other, कश्चित् some one, पुरुषः man, पलाशैः by palasa trees, यथा as, मोहितः deluded, भवेत् becomes, एवम् like that, ममापि to me, शब्दवेध्यमयम् the act of shooting the target on hearing the sound, फलम् the consequences, अविज्ञातम् was not premeditated.

Like some one who is deluded by palasa trees I too did not realise the consequences of shooting the target following the direction of the sound.