Sushruta Samhita
अधिगतमप्यध्ययनमप्रभाषितमर्थतः खरस्य चन्दनभार इव केवलं परिश्रमकरं भवति ॥३॥
Even if knowledge is acquired, if it is not explained, it becomes merely a burden like the sandalwood on the back of an ass; it turns out to be nothing but laborious.
english translation
adhigatamapyadhyayanamaprabhASitamarthataH kharasya candanabhAra iva kevalaM parizramakaraM bhavati ॥3॥
hk transliteration by Sanscript