In plain words
There were great, great paṇḍitas there, giants of learning. The moment Śaṅkara entered Kashmir, the doors of the Kanakadurgā temple on the hill there closed of their own accord. However much they tried, the doors would not open. The paṇḍitas all went and were trying in many ways. They were offering prayers. They were reciting the Itihāsas, the Purāṇas and the authorities. But they did not open. Then Kanakadurgā, the embodiment of Śakti, spoke a word as a voice without a body: ‘Śaṅkara is very great. He is an ācārya. He has gone on practising every single thing himself and showing it. But an impurity has entered into him. Only when he makes a fitting effort to drive out that impurity will those doors open.’ Then Śaṅkarācārya went on chanting the Gurudevatā Stotra:
O Īśa, Lord of the mountain, Lord of men, Supreme Lord, Lord of the gods, all-pervading One; Sāmba, Sadāśiva, Śambhu, Śaṅkara: my refuge is Your pair of feet.
He went on praying in many ways. The fault of what I enjoyed in the royal palace, when I went there by parakāya praveśa, is itself the cause of this temple's doors being shut. Saying that to make amends for this fault he would do prāyaścitta for eleven days, without sleep or food and without taking any drink, he sat down there doing tapas. On the twelfth day the doors opened. Do you see! Such a great vow did Śaṅkara undertake. Today Krishnamurthy and Chatterjee went on speaking about Prema. Which Prema? That is where we must ask the question. ‘Love Swami, all of you. By this Prema everything becomes fulfilled,’ they said. What kind of Prema? Not worldly Prema. Because he went into worldly Prema, even Śaṅkara took on a fault in this way. And that too was not of his own wish; it was only to give Ubhayabhāratī her answer. If you love with the feeling of the Ātma, there is no fault at all. To love with attachment to the Ātma, not with attachment to the body, is true Prema.