Mahabharata 12.296.28

12.296.28

śucikarmā śuciścaiva bhavatyamitadīptimān |
vimalātmā ca bhavati sametya vimalātmanā || 28 ||

By uniting with one striving after Emancipation, he himself, partaking of the nature of his companion, strives after Emancipation. By uniting with one of pure deeds he becomes pure and of pure deeds and endued with blazing effulgence. By uniting with one of unstained soul, he becomes of unstained soul himself. By uniting with the One independent Soul, he becomes One and Independent. Uniting with One that is dependent on One's own Self, he becomes of the same nature and attains to Independence.