大方廣佛華嚴經隨疏演義鈔 34.49

34.49

疏「既攬同成異亦稱體成益」者，既是如來將其同因以取異果，故令圓機即應見真，故云稱體成益。

Regarding the Commentary's statement, "Having gathered the identical to accomplish the different, it also accords with the essence to accomplish benefit": since the Tathāgata uses his identical cause to take different fruits, he causes faculties of the perfect teaching to immediately see the real; hence it says it accords with the essence to accomplish benefit.