Garudapurana 1.159.30

1.159.30

raktā sitā sphoṭacitā dāruṇā tvalajī bhavet /
masūrākṛti saṃsthānā vijñeyā tu masūrikā //

alajī is red and white, covered with blisters, and terrible; / masūrikā is to be known as having the shape of a lentil;