Ibn 'Abbas (RAA) narrated that the Messenger of Allah (ﷺ) said:
"A Muslim's name is sufficient for him, so if he forgets to mention Allah's name when he slaughters an animal, he should mention Allah's name, then eat it." Related by Ad-Daraqutni but there is a weak narrator in its chain. Also there is Muhammad bin Yazid bin Sinan in its chain who is truthful but had a weak memory. (IT)
English reference (IT): Book 12, Hadith 1384 (IT)
Arabic reference (IT): Book 12, Hadith 1344 (IT)