In Jainism, Sukla Dhyan (also spelled as Sukla Dhyana) refers to one of the four main types of meditation (Dhyana). The four types are:

1. Arta Dhyana (painful or anguished meditation)
2. Raudra Dhyana (wrathful or cruel meditation)
3. Dharma Dhyana (virtuous or righteous meditation)
4. Sukla Dhyana (pure or white meditation)

Sukla Dhyan is the highest and purest form of meditation, characterized by absolute purity of thought, detachment, and concentration on the true nature of the soul (atman). It is associated with spiritual purity, supreme bliss, and total freedom from passions (kashayas) and attachment. Sukla Dhyan is practiced by advanced spiritual aspirants (like Arihantas and Tirthankaras) and is considered the meditation that leads directly to Kevala Jnana (omniscience) and ultimately to moksha (liberation).

Key points about Sukla Dhyan:

• It is free from all passions, attachments, and aversions.
• It involves contemplation on the soul's pure qualities or on the nature of liberation.
• Only those who have attained high spiritual purity (such as advanced ascetics) can practice Sukla Dhyan.
• It is the final step before attaining liberation.

References:

• Tattvartha Sutra (Jain scripture), Chapter 9
• Jainendra Siddhanta Kosha
• Samayasara by Acharya Kundakunda

In summary, Sukla Dhyan is the purest form of meditation in Jainism, leading the soul to ultimate liberation.