مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2631
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that the Messenger of Allah (ﷺ) said: "The one who takes back his gift is like the one who takes back his vomit.” Qatadah said: As far as I know, vomit is haram.
Musnad Ahmad 2646lts isnad is saheeh, al-Bukhari (2621) and Muslim (1622)]