Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 31


वदत्येवं जने सत्या दृष्ट्वासुत्यागमद्भुतम् ।दक्षं तत्पार्षदा हन्तुमुदतिष्ठन्नुदायुधा: ॥ ३१ ॥


vadaty evaṁ jane satyādṛṣṭvāsu-tyāgam adbhutamdakṣaṁ tat-pārṣadā hantumudatiṣṭhann udāyudhāḥ


While people were talking among themselves about the wonderful voluntary death of Satī, the attendants who had come with her readied themselves to kill Dakṣa with their weapons.


The attendants who came with Satī were meant to protect her from calamities, but since they were unable to protect their master’s wife, they decided to die for her, and before dying they wanted to kill Dakṣa. It is the duty of attendants to give protection to their master, and in case of failure it is their duty to die.