Just like a diseased man . . . if you go to a physician, by your symptoms he can understand that you have got a certain type of disease and he gives you the right medicine. Similarly, in the Bhagavad-gītā you'll find who is under the spell of the modes of ma . . . uh, yes, goodness. If he's very sober, intelligent, can understand things as they are, they are to be understood in the modes of goodness. Those who are very much passionate, simply wants to enjoy sense enjoyment, they are in the modes of passion. And those who are lazy, very fond of sleeping, nidrālasya, he's to be understood in the modes of ignorance. These are the symptoms. And according to the modes, they act. Therefore bhakti is not prohibited to either of them. Either in goodness or passion or ignorance—it doesn't matter. Anyone can take to devotional service, sādhana-bhakti, provided he agrees to be guided by the direction of the spiritual master. Bhakti is transcendental. It doesn't matter whether one is in goodness, passion or ignorance. Anyone can take.
That is confirmed in the Bhagavad-gītā: māṁ hi pārtha vyapāśritya ye 'pi syuḥ pāpa-yonayaḥ (BG 9.32). Pāpa-yonayaḥ means the lowest part of ignorance. So Kṛṣṇa recommends that anyone, even in pāpa-yoni—striya, vaiśyās tathā śūdrās . . . stri, women, and vaiśya and śūdra, they're also considered not very in higher position. But Kṛṣṇa says all of them, if they take to real path of devotional service under the direction of spiritual master, then that is sādhana-bhakti. To act under the direction of spiritual master . . . spiritual master directs means he knows śāstra. According to the direction of śāstra or ācāryas, he gives direction. And if we follow, that is called sādhana-bhakti. That is called practice.