A type of Māṇḍalika Doṣa (blemish incurred at the time of eating meals), which is indulged in by an ascetic (Muni) by praising the tasty meal and its giver. It is called Aṅgāra because, on account of this blemish the transgressor (monk) as if converts the fuel of conduct into coal (aṅgāra) by the fire of attachment.
taṃ hoi saiṃgālaṃ jaṃ āhārei mucchio saṃto.
(PiNi 655)
Svādvannaṃ taddātāraṃ vā praśaṃsan yad bhuṅkte sa rāggāgninā caritrendhanasyāṅgārīkaraṇādaṅgāro doṣaḥ.
(Yośā 1.38 Vṛ p.138)