विद्या मित्रं प्रवासे च भार्या मित्रं गृहेषु च ।
व्याधितस्यौषधं मित्रं धर्मो मित्रं मृतस्य च ॥५.१५॥

vidyā mitraṃ pravāse ca bhāryā mitraṃ gṛheṣu ca |
vyādhitasyauṣadhaṃ mitraṃ dharmo mitraṃ mṛtasya ca ||5.15||

knowledge is a friend during a journey, a wife is a friend in the house, medicine is a friend in sickness, righteousness is a friend in death

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Excerpt from the book “Old Chanakya Strategy: Aphorisms” by Rajen Jani