Shiva Purana
गुरुं तमेव वृणुयान्नापरं मतिमान्नरः ॥ स शिष्यैर्विनयाचारचतुरैरुचितो गुरुः ॥ ४४ ॥
A wise man should seek only that spiritual master and no other His disciples who were wise in modesty and conduct approved of him as their spiritual master.
english translation
guruM tameva vRNuyAnnAparaM matimAnnaraH ॥ sa ziSyairvinayAcAracaturairucito guruH ॥ 44 ॥
hk transliteration by Sanscript