When burying the deceased should you pray Quran at the head and feet or do Dua?

QUESTION: Is it proven in hadith that when you are burying the deceased that you pray Quran at the head and feet or do you do dua straight away?   ANSWER: After burying the deceased, to read the opening verses of surah al-baqarah until “المفلحون”, near the headside of the grave-thereafter, to read the closing verses of surah …