大乘起信論義記 2.227

2.227

六、業繫苦者，業用已成，招果必然，循環諸道生死長縛，故云依業受果不自在也。上來末相竟。

Sixth, as for "suffering bound to karma": the karmic functioning having already been accomplished, the reaping of fruits is inevitable; revolving through the various destinies, it is bound long in saṃsāra. Therefore it says, "relying on karma, it undergoes retribution without autonomy." The derivative marks above are concluded.