Matsarya (मात्सर्यम्)
Baudhayana Dharmasutras gives elaborate details about who is called a Shista and what his Atma and Buddhi gunas are.
शिष्टाः खलु विगतमत्सरा निरहंकाराः कुम्भीधान्या अलोलुपा दम्भदर्पलोभ-मोह-क्रोध-विवर्जिताः ॥
धर्मेणाधिगतो येषां वेदः सपरिबृंहणः । शिष्टास् तदनुमानज्ञाः श्रुति-प्रत्यक्ष-हेतवः ॥ इति ॥ (Bau. Dhar. Sutr. 5-6)[1]
Shistas are devoid of matsarya (intolerance to others good qualities), ahamkara (pride due to vidya or social position), hypocrisy, arrogance, greed, moha (inability to discriminate), anger, they are content and have few desires. They have a though understanding of the Vedas and associated granthas like puranas and itihasas, who can clearly envisage the reasoning that "this shruti (words) is directly pertinent to this dharma" (श्रुति-प्रत्यक्ष-हेतवः), and are experts at pointing out the inferential references of Vedas in Smrtis, acharas, agamas (स्मार्तशिष्टागमयोश्श्रुत्यानुमानविदः). Thus he is one who, having understood the dharmas defined by the shastras, applies and executes them as per situations (अनुष्ठानम्).<ref>Pt. Srinivasacharya, L. (1907) The Bodhayana Dharmasutra with the commentary of Govindasvamin. Mysore: The Government Branch Press (Pages 2-3)