Shiva Purana
मानो महान्तमित्यादिचतुर्भिर्मस्तकन्ततः ॥ नालिकेरेण निर्भिद्यादवटं पूरयेत्ततः ॥ ५९ ॥
The skull shall be split with a coconut repeating the four mantras beginning with “Mā no Mahāntam” etc. Then the ditch shall be filled.
english translation
mAno mahAntamityAdicaturbhirmastakantataH ॥ nAlikereNa nirbhidyAdavaTaM pUrayettataH ॥ 59 ॥
hk transliteration by Sanscript