Śrīmad-Bhāgavatam · Text 11.11.19
गां दुग्धदोहामसतीं च भार्यां
देहं पराधीनमसत्प्रजां च ।
वित्तं त्वतीर्थीकृतमङ्ग वाचं
हीनां मया रक्षति दु:खदु:खी ॥ १९ ॥
gāṁ dugdha-dohām asatīṁ ca bhāryāṁ
dehaṁ parādhīnam asat-prajāṁ ca
vittaṁ tv atīrthī-kṛtam aṅga vācaṁ
hīnāṁ mayā rakṣati duḥkha-duḥkhī
My dear Uddhava, that man is certainly most miserable who takes care of a cow that gives no milk, an unchaste wife, a body totally dependent on others, useless children or wealth not utilized for the right purpose. Similarly, one who studies Vedic knowledge devoid of My glories is also most miserable.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.