पापान् निवारयति योजयते हिताय | गुह्यानि गूहति गुणान् प्रकटीकरोति | आपद्गतम् च न जहाति ददाति काले | सन्मित्रलक्षणमिदम् प्रवदन्ति सन्तः || One who tries to remove your defects, advises you well and steers you on a righteous path, tells others about your positive qualities, does not desert you in times of trouble, and gives (money, support, time, etc.) in times of need, is a good friend - so say the wise.