ENOfficial
It was narrated that Ibn 'Abbas said: "The one who takes back his gift is like the one who goes back to his vomit."
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا أَبُو الأَشْعَثِ، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الْعَائِدُ فِي هِبَتِهِ كَالْعَائِدِ فِي قَيْئِهِ " .
sunnah.com