यः सर्वत्रानभिस्नेहस्तत्तत्प्राप्य शुभाशुभम्। नाभिनन्दति न द्वेष्टि तस्य प्रज्ञा प्रतिष्ठिता ॥

yaḥ sarvatrānabhisnehas tat tat prāpya śhubhāśhubham nābhinandati na dveṣhṭi tasya prajñā pratiṣhṭhitā

He who on every side is without attachments, whatever hap of fair and foul, who neither likes nor dislikes, of such a one the understanding is well poised.

In plain words: A person is truly balanced when they are not clingy about anything. Whether good or bad things happen, they do not get carried away by liking or disliking.