Shiva Purana
ब्रह्मास्त्रमनिवार्य्यं तदन्यैरस्त्रैर्महाप्रभम् ॥ उत्तरागर्भमुद्दिश्य चिक्षेप स महाप्रभुः ॥ ३४ ॥
The powerful Aśvatthāman hurled the excessively lustrous Brāhma-missile that could not be countermanded by any other missile, aiming it at the womb of Uttarā.
english translation
brahmAstramanivAryyaM tadanyairastrairmahAprabham ॥ uttarAgarbhamuddizya cikSepa sa mahAprabhuH ॥ 34 ॥
hk transliteration by Sanscript