Verse 15

सौजन्योपहितं चेतो यदा वैराग्यमागतम् ।तदानुगम्या गुरवो विज्ञानगुरवोऽपि ये

In plain words

When the mind, furnished with goodness of nature, has come to vairāgya, then those gurus are to be followed who are also weighty in vijñāna.