"The parable of the one who gives a gift, and then takes it back, is that of a dog who eats until he is full, and vomits, then he returns to [take back] his vomit."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَثَلُ الَّذِي يُعْطِي الْعَطِيَّةَ ثُمَّ يَرْجِعُ فِيهَا كَالْكَلْبِ أَكَلَ حَتَّى إِذَا شَبِعَ قَاءَ ثُمَّ عَادَ فَرَجَعَ فِي قَيْئِهِ  

"It is not lawful for a man to give a gift and then take it back, except in the case of the father with what he gave to his son. And the parable of the one who gives a gift, and then takes it back, is that of a dog who eats until he is full, and vomits, then he returns to his vomit."  

أَنْ يُعْطِيَ عَطِيَّةً ثُمَّ يَرْجِعَ فِيهَا إِلاَّ الْوَالِدَ فِيمَا يُعْطِي وَلَدَهُ وَمَثَلُ الَّذِي يُعْطِي الْعَطِيَّةَ ثُمَّ يَرْجِعُ فِيهَا كَمَثَلِ الْكَلْبِ أَكَلَ حَتَّى إِذَا شَبِعَ قَاءَ ثُمَّ عَادَ فِي قَيْئِهِ