((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.))
Ahmad 5/82, and An-Nasa'i in 'Amalul-Yawm wal-Laylah p. 218, with checking by Dr. Farooq Hamadah.