SB 10.63.20

tan-mātā koṭarā nāma
 nagnā makta-śiroruhā
puro ’vatasthe kṛṣṇasya
 putra-prāṇa-rirakṣayā
Synonyms: 
tat — his (Bāṇāsura’s); mātā — mother; koṭarā nāma — named Koṭarā; nagnā — naked; mukta — loosened; śiraḥ-ruhā — her hair; puraḥ — in front; avatasthe — stood; kṛṣṇasya — of Kṛṣṇa; putra — her son’s; prāṇa — life; rirakṣayā — hoping to save.
Translation: 
Just then Bāṇāsura’s mother, Koṭarā, desiring to save her son’s life, appeared before Lord Kṛṣṇa naked and with her hair undone.