872 subhadrāśokaharaṇaḥ
who removed Subhadrā's grief (after Abhimanyu's death)
M.B Droṇaparva 79
After Abhimanyu's death, Kṛṣṇa comforts the grieving Subhadrā (his own sister); he channels their shared grief into the vow that will make Arjuna's revenge both purposeful and contained.