Manusmriti
अधोदृष्टिर्नैष्कृतिकः स्वार्थसाधनतत्परः । शठो मिथ्याविनीतश्च बकव्रतचरो द्विजः ॥ १९६ ॥
That Brahmana, who with downcast look, of a cruel disposition, is solely intent on attaining his own ends, dishonest and falsely gentle, is one who acts like a heron.
english translation
adhodRSTirnaiSkRtikaH svArthasAdhanatatparaH । zaTho mithyAvinItazca bakavratacaro dvijaH ॥ 196 ॥
hk transliteration by Sanscript