Sayyidah Aishah Siddiqah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) said: "Follow your food with the remembrance of Allah and prayer, and do not go to sleep immediately after eating, or else your hearts will become hard."
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains Bazi' Abu al-Khalil, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأطعمة / 7958