सतगुरू का निंदक ठौर न पाये satgurū kā nindak ṭhaur na pāyē

का kā (hindi)

का denotes one of the under-mentioned relations between a Noun or a Pronoun and another Noun which follows the former. If the Noun that follows is Feminine (singular or plural), का changes to की; if it is Masculine and Plural, or has an oblique form, का changes to के.

• Possession and relationship.
• Material or composition.
• Worth and measure (space or time).
• Source, origin, cause.
• Subject (doer of an act).
• Object (of an activity).
• Part of a whole.
• Purpose.
• Characteristic.
  (A Basic Grammar of Modern Hindi)

न na (hindi)

Not (subjunctive or imperative).
Na .. na, Neither .. nor.
Repetitive Compounds of indefinite Pronouns, and of Adverbs formed from them are made by placing the Negative particle between the two words. These Compounds have a pronounced indefinite force. (A Basic Grammar of Modern Hindi - Appendice III 5-j)

निंदक nindak (sanskrit)

One who speaks ill (of somebody), a blamer, slanderer, censurer, calumniator.
(Bābā) One who harms the reputation (of someone by his words or actions)

सतगुरू satgurū (hindi)

The good spiritual guide, the true spiritual guide, God.