[INDOLOGY] Buddhist Citation

[Patrick Olivelle]

I wonder whether any of you can help me with a citation in Kumārila's Tantravārttika (on PMS 1.3.4; ĀnSS p. 114). 

buddhādeḥ punar ayam eva vyatikromo 'alaṃkārubuddhau sthitaḥ | tenaivam āha |

 kalikaluṣakṛtāni yāni loke mayi nipatantu vimucyatāṃ tu lokaḥ ||

Does anyone know of a Buddhist text called Alaṃkārabuddhi? Or is this a misreading of a different text with a similar name?

Thanks.

Patrick