Quran 80:17

Enter into his gates with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name.

The prince of cranes, approaching his friend Gautama, who still bore on his shoulders the load of gold (that he had got from the king of the Rakshasas) embraced him and felt great joy. Rajadharman, that prince of cranes, dismissing Gautama of sinful deeds, together with his wealth, returned to his own abode. At the due hour he repaired (the next day) to the Grandsire's region. The latter honoured the high-souled bird with such attentions as are shown to a guest. Gautama also, returning to his home in the village of the hunters, begot many sinful children upon his Sudra wife. A heavy curse was denounced upon him by the gods to the effect that having begotten, within a few years,[498] upon the body of his remarried wife many children that ungrateful sinner should sink into a terrible hell for many years. All this, O Bharata, was recited to me formerly by Narada. Recollecting the incidents of this grave story, O bull of Bharata's race, I have recited to thee all its details duly. Whence can an ungrateful person derive fame? Where is his place? Whence can he have happiness? An ungrateful person does not deserve to be trusted. One that is ungrateful can never escape. No person should injure a friend. He that injures a friend sinks into terrible and everlasting hell. Every one should be grateful and every one should seek to benefit his friends. Everything may be obtained from a friend. Honours may be obtained from friends.[499] In consequence of friends one may enjoy various objects of enjoyment. Through the exertions of friends, one may escape from various kinds of danger and distress. He that is wise would honour his friend with his best attentions. An ungrateful, shameless, and sinful wight should be shunned by those that are wise. One that injures his friends is a wretch of his race. Such a sinful wight is the vilest of men.

Shouts of acclaim the listening heroes raise, Then each to Heaven the due libations pays; Till sleep, descending o’er the tents, bestows The grateful blessings of desired repose.[214]

"Famed is the prince who loves the truth, Whose soul is touched with tender ruth, Who, liberal, keeps each sense subdued, And pays the debt of gratitude. But all unmeet a king to be, The meanest of the mean is he Who basely breaks the promise made To trusting friends who lent him aid. He sins who for a steed has lied, As if a hundred steeds had died: Or if he lie, a cow to win, Tenfold as heavy is the sin. But if the lie a man betray, Both he and his shall all decay.(639) O Vanar King, the thankless man Is worthy of the general ban, Who takes assistance of his friends, And in his turn no service lends. This verse of old by Brahma sung Is echoed now by every tongue. Hear what He cried in angry mood Bewailing man's ingratitude: "For draughts of wine, for slaughtered cows, For treacherous theft, for broken vows A pardon is ordained: but none For thankless scorn of service done." Ungrateful, Vanar King, art thou, And faithless to thy plighted vow. For Rama brought thee help, and yet Thou shunnest to repay the debt: Or, grateful, thou hadst surely pressed To aid the hero in his quest. Thou art, in vulgar pleasures drowned, False to thy bond in honour bound. Nor yet has Rama's guileless heart Discerned thee for the thing thou art-- A snake who holds the frogs that cries And lures fresh victims as it dies. Brave Rama, born for glorious fate, Has set thee in thy high estate, And to the Vanars' throne restored, Great-souled himself, their mean-souled lord. Now if thy pride disown what he, High thoughted prince, has done for thee, Struck by his arrows shalt thou fall, And Bali meet in Yama's hall. Still open, to the gloomy God, Lies the sad path thy brother trod. Then to thy plighted word be true, Nor let thy steps that path pursue. Methinks the shafts of Rama, shot Like thunderbolts, thou heedest not, Who canst, absorbed in sensual bliss, Thy promise from thy mind dismiss."