To overcome attachment we

The yogis, abandoning attachment, act with body, mind, intelligence and even with the senses, only for the purpose ofpurification. (5.11)

Abandoning all attachment to the results of his activities, ever satisfied and independent, he performs no fruitive action,although engaged in all kinds of undertakings. (4.20)

Being freed from attachment, fear and anger, being fully absorbed in Me and taking refuge in Me, many, many persons in the pastAs all surrender unto Me, I reward them accordingly. Everyone follows My path in all respects, O son of Prtha. (4.11)

Being freed from attachment, fear and anger, being fully absorbed in Me and taking refuge in Me, many, many persons in the past became purified by knowledge of Me–and thus they all attained transcendental love for Me. (4.10)

Sin will overcome us if we slay such aggressors. Therefore it is not proper for us to kill the sons of Dhrtarastra and our friends. What should we gain, O Krishna, husband of the goddess of fortune, and how could we be happy by killing our own kinsmen?(1.36)

The Buddhist notion of attachment is not what people in the West assume. We say that such love is free of attachment.

As the ignorant perform their duties with attachment to results, the learned may similarly act, but without attachment, for thesake of leading people on the right path. (3.25)

There are principles to regulate attachment and aversion pertaining to the senses and their objects. One should not come under thecontrol of such attachment and aversion, because they are stumbling blocks on the path of self-realization. (3.34)

While contemplating the objects of the senses, a person develops attachment for them, and from such attachment lust develops, andfrom lust anger arises. (2.62)