SB 11.17.17

tejo balaṁ dhṛtiḥ śauryaṁ
 titikṣaudāryam udyamaḥ
sthairyaṁ brahmanyam aiśvaryaṁ
 kṣatra-prakṛtayas tv imāḥ
Synonyms: 
tejaḥ — dynamic power; balam — bodily strength; dhṛtiḥ — determination; śauryam — heroism; titikṣā — tolerance; audāryam — generosity; udyamaḥ — endeavor; sthairyam — steadiness; brahmaṇyam — being always eager to serve the brāhmaṇas; aiśvaryam — leadership; kṣatra — of the kṣatriyas; prakṛtayaḥ — the natural qualities; tu — indeed; imāḥ — these.
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.