Bhakti Sandarbha 209 : The bhajana-śikṣā guru is also necessary

Buddha Weekly The series on the necessity of a guru continues. Here it is the necessity of a bhajana-śikṣā guru, evidently, after initiation. शिक्षागुरोरप्यवश्यकत्वमाहुः (भा. १०.८७.३३)— विजितहृषीकवायुभिरदान्तमनस्तुरगं य इह यतन्ति यन्तुमतिलोलमुपायखिदः। व्यसनशतान्विताः समवहाय गुरोश्चरणं वणिज इवाज सन्त्यकृतकर्णधरा जलधौ ॥ The śikṣā-guru is also necessary, as stated by the personified śrutis: O birthless Bhagavān! The mind is like a wild, unbridled horse. Those who endeavor to control it through mastery over their senses and breath without taking shelter of the feet of a guru, cannot do so. They are troubled by the very methods they adopt and are beset with hundreds of tribulations in this world. They are like merchants who attempt to cross the ocean on a ship without a captain . (SB 10.87.33) ये गुरोश्चरणं समवहाय अतिलोलमतिलोलुपमदान्तमदमितं मन एव तुरगं विजितैरिन्द्रियैः प्राणैश्च कृत्वा यन्तुं भगवदुन्मुखीकर्तुं प्रयतन्ते ते उपायखिदः, तेषु तेषु उपायेषु खिद्यन्ते...