أَخْبَرَنَا أَحْمَدُ بْنُ حَرْبٍ، قَالَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ حَجَّاجٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ الْعَائِدُ فِي هِبَتِهِ كَالْعَائِدِ فِي قَيْئِهِ ‏"‏ ‏.‏

It was narrated from Abu Az-Zubair, from Tawus, that Ibn 'Abbas said: "The Messenger of Allah said: 'The one who takes back his gift, is like the one who goes back to his vomit.'" Translation Not Available

Book Ref: Sunan An Nisai Book 32 Hadith 3702
Web Ref:  Sunan An Nisai Vol 4 Book 32 Hadith 3732