Musannaf Ibn Abi Shaybah

Hazrat Alaa bin Musayyib narrates from his father that when the deceased is lowered into the grave, do not say Bismillah, rather recite this: "In the way of Allah and upon the Sunnah of the Messenger of Allah (peace and blessings be upon him), upon the religion of Ibrahim, who was an upright Muslim and was not among the polytheists. O Allah! Grant him strength with the firm word in the Hereafter. O Allah! Grant him more goodness than before. O Allah! Do not deprive us of his reward and do not put us to trial after him." And he says that this verse of the Holy Qur'an { یُثَبِّتُ اللّٰہُ الَّذِیْنَ اٰمَنُوْا بِالْقَوْلِ الثَّابِتِ فِی الْحَیٰوۃِ الدُّنْیَا وَ فِی الْاٰخِرَۃِ } was revealed regarding the occupant of the grave.