Shiva Purana
ब्रह्महत्यादिदोषाणामतीव महतामपि ॥ निष्कृतिर्ब्रह्मकूर्चस्य पानान्नान्या विशिष्यते ॥ ५ ॥
The atonement for the murder of a brahmin and other great sins is the drinking of Brahmakūrca. There is no better remedy.
english translation
brahmahatyAdidoSANAmatIva mahatAmapi ॥ niSkRtirbrahmakUrcasya pAnAnnAnyA viziSyate ॥ 5 ॥
hk transliteration by Sanscript