In plain words
You are the dark one. My Kāḷindī pool has become greatly defiled; it is darker even than You. If I want to see Your image in that Kāḷindī pool, the water is black, You are black, and the pupil in the middle of my seeing eyes is black too. If these three are black, how can I see Your form? I will not ask You to clean the Kāḷindī pool. Why should You do this sweeper's work? Your form need not be changed beyond what it is. You need not change the sight of my eyes. Because mine are the eyes that have seen Your beautiful form. So do not change my sight either. Make white the colour of the sky that shows in that Kāḷindī pool. In that white water the dark form will show very clearly. The lake of my mind itself is the Kāḷindī lake. It is Kāḷindī that has many desires for its heads. It has entered into this Manas. This is the lake of the mind. It has let out all the filth of those desires into it. I cannot see Your reflection in that Kāḷindī pool. So You need not clean my Manas. Purify my heart, which is reflected in this Manas. Here they have taught that purity of citta is most necessary for men.
Tiruttāṇḍāzhvār said the same thing. Purity of citta is most necessary. Only then will your pūjā bear fruit. … lake of the mind is a very fearsome lake. It is like a great ocean. There is no end at all to the waves of desire. Waves come, as many as you like. But at the very bottom of it lies Your form. You are like a pearl, Kṛṣṇa. In the body, the nose is the most important thing in the face. However fine the face and the eyes may be, if the nose alone is not right, all the beauty is spoilt. All of Kṛṣṇa's beauty:
Kastūrī tilakaṃ lalāṭaphalake vakṣasthale kaustubhaṃ nāsāgre navamauktikaṃ
everything is there. The pearl in that nose keeps scattering all Your beauty abroad. You are like a pearl. A pearl is not easily caught. It lies in the deep ocean. If one has to dive into the deep ocean to take it, this is possible only for some great soul, Kṛṣṇa. You, who are like a pearl, have come to us. In this ocean of worldly life we see You and rejoice. It is through You alone that we keep our lives alive. So it is not possible for You to leave our hearts and go. If You leave, we cannot win You back again. To hold on to what has been caught is itself the great good fortune. … 'Yogakṣemaṃ vahāmyahaṃ', He said in the Bhagavad Gītā. Yoga means our winning what is rare; protecting what has been won is kṣema. You have come to us. The Gopīs prayed, 'Grant us the strength and the ability to hold on to You.'
Mīrā too said this very thing. Bearing hardships of many kinds in the ocean, we have … this pearl.