Quran 7:102

“Vaisampayana said, ‘Then, O king, the mighty son of Bharadyaja presented himself before Drupada, and addressing that monarch, said, ‘Know me for thy friend.’ Thus addressed by his friend, the son of Bharadwaja, with a joyous heart, the lord of the Panchalas was ill-able to bear that speech. The king, intoxicated with the pride of wealth, contracted his brows in wrath, and with reddened eyes spake these words unto Drona, ‘O Brahmana, thy intelligence is scarcely of a high order, inasmuch as thou sayest unto me, all on a sudden, that thou art my friend! O thou of dull apprehension, great kings can never be friends with such luckless and indigent wights as thou! It is true there had been friendship between thee and me before, for we were then both equally circumstanced. But Time that impaireth everything in its course, impaireth friendship also. In this world, friendship never endureth for ever in any heart. Time weareth it off and anger destroyeth it too. Do not stick, therefore, to that worn-off friendship. Think not of it any longer. The friendship I had with thee, O first of Brahmanas, was for a particular purpose. Friendship can never subsist between a poor man and a rich man, between a man of letters and an unlettered mind, between a hero and a coward. Why dost thou desire the continuance of our former friendship? There may be friendship or hostility between persons equally situated as to wealth or might. The indigent and the affluent can neither be friends nor quarrel with each other. One of impure birth can never be a friend to one of pure birth; one who is not a car-warrior can never be a friend to one who is so; and one who is not a king never have a king for his friend. Therefore, why dost thou desire the continuance of our former friendship?’

Do not have evil-doers for friends, do not have low people for friends: have virtuous people for friends, have for friends the best of men.

A man that hath friends must shew himself friendly: and there is a friend that sticketh closer than a brother.

Doubt from Sugriva's heart had fled, And thus to Raghu's son he said: "No bliss the Gods of heaven deny. Each views me with a favouring eye, When thou, whom all good gifts attend, Hast sought me and become my friend. Leagued, friend, with thee in bold emprise My arm might win the conquered skies; And shall our banded strength be weak To gain the realm which now I seek? A happy fate was mine above My kith and kin and all I love, When, near the witness fire, I won Thy friendship, Raghu's glorious son. Thou too in ripening time shall see Thy friend not all unworthy thee. What gifts I have shall thus be shown: Not mine the tongue to make them known. Strong is the changeless bond that binds The friendly faith of noble minds, In woe, in danger, firm and sure Their constancy and love endure. Gold, silver, jewels rich and rare They count as wealth for friends to share. Yea, be they rich or poor and low, Blest with all joys or sunk in woe, Stained with each fault or pure of blame, Their friends the nearest place may claim; For whom they leave, at friendship's call, Their gold, their bliss, their homes and all."