((وَلَكَ)).
(AAabdullah Ibn Sarjis said: ‘I went to see the Prophet and ate from his food and then said to him: (May Allah forgive you, O Messenger of Allah.) he replied: (and you.))
Source: حصن المسلم من أذكار الكتاب والسنة — سعيد بن علي بن وهف القحطاني