"The likeness of the one who takes back his gift is that of a dog which vomits, then goes back to its vomit." (One of the narrators) Al-Awza'i said: "I heard him narrating this Hadith to 'Ata bin Abi Rabah." (Using translation from Nasāʾī 3695)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ «مَثَلُ الَّذِي يَرْجِعُ فِي صَدَقَتِهِ كَمَثَلِ الْكَلْبِ يَقِيءُ ثُمَّ يَعُودُ فِي قَيْئِهِ» قَالَ الْأَوْزَاعِيُّ سَمِعْتُهُ يُحَدِّثُ عَطَاءَ بْنَ أَبِي رَبَاحٍ بِهَذَا الْحَدِيثِ