A mishnah on a widow and how the heirs of her husband provide for her. And then the application of the halakhah to the widow of R. Yehudah HaNasi or his message to his heirs before he dies, which accommodates her - and the honor that is due her. Also, note the role he plays in handling his death, his memory, and his succession. Plus, a bat kol praising those who went out for his funeral.