Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 17
Sanskrit:
तेजो बलं धृति: शौर्यं तितिक्षौदार्यमुद्यम: ।स्थैर्यं ब्रह्मण्यमैश्वर्यं क्षत्रप्रकृतयस्त्विमा: ॥ १७ ॥
ITRANS:
tejo balaṁ dhṛtiḥ śauryaṁtitikṣaudāryam udyamaḥsthairyaṁ brahmanyam aiśvaryaṁkṣatra-prakṛtayas tv imāḥ
Translation:
Dynamic power, bodily strength, determination, heroism, tolerance, generosity, great endeavor, steadiness, devotion to the brāhmaṇas and leadership are the natural qualities of the kṣatriyas.