In plain words
Ānanda is our Satya-svarūpa. Sorrow is our Asatya-svarūpa. Happiness is our Satya-svarūpa. Unhappiness is our Asatya-svarūpa. That is why taking the Asatya-svarūpa for Satya is mala. So this mala means simply this: taking oneself to be the antaḥkaraṇa, which is impermanent and passing; that is the mala in it. In what way must we root this out? For this very purpose the Veda has taught many paths. Do good actions. What are these good actions? They are the rites, yajña, yāga and the rest. Deeds of dāna, Dharma and the like. Actions offered to God may be regarded as good actions. Through such sacred actions, purity of citta comes about in us. Purity of citta means that the impurities which gathered in the heart before this fade out of sight. Through many kinds of saṃskāras, through customs, through delusions, some impurity has formed in this citta. So purity of citta comes about through all the good actions man does. That is why they said, ‘Cittasyaśuddhaye karmaḥ.’ That is, to put mala far away and make oneself clean is the special meaning in the karma-kāṇḍa on this path of karma.
Now the second, āvaraṇa. What is āvaraṇa? That which covers is āvaraṇa. What has covered it! The qualities called kāma, krodha, lobha, moha, mada and mātsarya, which make people forget their own svarūpa, have covered man. Feelings of attachment and hatred have covered him. Through these, man forgets himself, pride goes to his head, and leaning on the strength of wealth, the strength of his arm, the strength of intellect, the strength of learning and the strength of numbers, man struts about. In this strutting he forgets himself. Forgetting himself, his discerning knowledge waning, keeping no distinction between elder and younger, he slights elders, insults them, reviles them, criticises them, makes fun of them; tendencies of Ahaṅkāra such as these have kept growing in him. All such bad qualities have kept his svarūpa hidden and made him forget his divinity. To remove such enveloping bad qualities, the Veda held upāsana to be most needed. Just as, when we set fragrant incense sticks in a place where there is a foul smell, that foul smell no longer reaches us, so too, by chanting the Name of God in the citta of man, enveloped by this foul smell, these bad qualities can be removed. What is Bhakti? Bhakti is friendship with God. A close bond with God.