Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 33
Sanskrit:
न तां शेकुर्नृपा वोढुमजित्वा सप्त गोवृषान् ।तीक्ष्णशृङ्गान् सुदुर्धर्षान् वीर्यगन्धासहान् खलान् ॥ ३३ ॥
ITRANS:
na tāṁ śekur nṛpā voḍhumajitvā sapta-go-vṛṣāntīkṣṇa-śṛṅgān su-durdharṣānvīrya-gandhāsahān khalān
Translation:
The kings who came as suitors were not allowed to marry her unless they could subdue seven sharp-horned bulls. These bulls were extremely vicious and uncontrollable, and they could not tolerate even the smell of warriors.