WE RELATE FROM the Ṣaḥīḥ of Muslim that Abū Hurayrah 
narrated that the Messenger of Allah 
said: “If any of you is invited [to eat] he should accept. If he is fasting he should supplicate [for his host] and if he is not fasting he should eat.” [1].
narrated that the Messenger of Allah said: “If any of you is invited [to eat] he should accept. If he is fasting he should supplicate [for his host] and if he is not fasting he should eat.” [1].The ‘ulamā’ say that the meaning of fa-l-yuṣalli is that he should make a supplication.
We relate in the book of Ibn as-Sunnī as well as others that he said: “If he is not fasting he should eat, and if he is fasting he should pray for blessings upon it.” [2].
said: “If he is not fasting he should eat, and if he is fasting he should pray for blessings upon it.” [2].References
[1] Muslim (1431), Abū Dāwūd (3742), and at-Tirmidhī (781).
[2] Ibn as-Sunnī (410) and an-Nasā’ī (300).