A Gnani wears no signs it means he does not identify himself as a Guru or a yogi or a teacher or a Swami.+

Sage Sankara clearly indicates in Viveka Chudamani (2) that the Knower of the Atman (A Gnani) "bears no outward mark of a holy man" (Stanza 539).  

A Gnani wears no signs which means he does not identify himself as Guru or teacher or swami.  Thus, it is not necessary to become a sanyasi or a yogi, or a swami to acquire self-knowledge.

Sage Sankara: On Gnani: "The knower of Brahman wears no signs. Gives up the insignia of a monk's life…his signs are not manifest, nor his behavior."( page 482)

When the knower of Brahman (Gnani) wears no signs it means he does not identify himself as Guru or yogi or teacher or Swami. 

Sage Sankara: ~ "Though I wear these robes of a Sanyasin, it is only for the sake of bread." Exploring if an outside observer can, in all cases, determine if a person is Enlightened or not, the venerated Indian Sanyasin, Sage Sankara, in his work The Crest-Jewel of Discrimination (1) or as it is sometimes known, Viveka Chudamani (2), states that the Knower of the Atman (i.e., a Gnani) "bears no outward mark of a holy man." (Stanza 539). 

Continuing, although there are variances found in the actual wording between various translators and translations the gist behind the words remains the same, Sage  Sankara writes:-“Sometimes he appears to be a Fool, sometimes a wise man. Sometimes he seems splendid as a king, sometimes feeble-minded. Sometimes he is calm and silent. Sometimes he draws men to him. Sometimes people honor him greatly, sometimes they insult him. Sometimes they ignore him.

"Unless one realizes the Soul as the Self as it really is” it is impossible to realize the nondualistic or Advaitic truth. 

Remember:~

The Gnani does not belong to the religious or yogic Sanyasa Ashram. He is above all stages. He is "One above all ashrams."  Both Gnani and the ignorant see the multiplicity, but Gnani does not take the differences which he sees as being real. That is the difference between them. The Gnani sees the unity behind the differences.

A true Gnani can never renounce anything. It is impossible. He has only renounced ignorance.  Gnanis are one in billions for they have ignored the opinions of whole peoples in their independent search for truth and questioned all beliefs, all scriptures, and all authorities until they could be proved to be true. Even the arguments that religions have been followed since time immemorial make no difference to them because if people have believed a false thing over millions of years, the length of time does not prove it true.

The Gnanis position is that if enjoyment comes, he accepts it; if it does not, he is silent. Even when he is taking pleasures, however, he is not deluded by them and he regards them as a game he is playing for he knows their unreality: he does not take them seriously, because he is fully aware of the fact that,  he and his experience of the pleasure and pain within the waking experience are as real as a dream. The one which witnesses the three states is not him but the soul.  The Clouds do not affect the sky, although they appear to; so the pleasures and pain do not change the Gnani.

Remember:~

The Gnani will follow whatever occupation he wishes according to circumstances. There are no prohibitions for him. He may be a farmer or a billionaire

A  Gnani does not perform miracles to attract attention to the truth because they know such a miracle performed in the unreal world is bound to be a falsehood.  They know the whole universe in which they exist is created out of single stuff and that single stuff is the soul, which is present in the form of consciousness. 

A Gnani has his realization of the ultimate truth or Brahman even whilst in the midst of the waking experience. No separation of one from the other is necessary for him, nor indeed is it possible.

One who wears the religious robe and symbol is not A Gnani.  One who has embarrassed sanyasa is not a Gnani. A Gnani remains as a householder and will go on with his usual avocation, plus these differences he will guide those with whom he comes in contact.

A Gnani guides all the seekers to the very end of their thinking; otherwise, they stop halfway and wrongly have an “I know” attitude.  This “I know” attitude is most dangerous and will not allow the seeker to reach the ultimate end of understanding.

When a man meets with doubt or confusion on his quest, he then needs guidance.  A Gnani clears all cobwebs of doubts and confusion without posing as a guru. A Gnani helps the seeker to know in which direction to turn.  A  Gnani points out the pitfalls and when a seeker has made an error and he makes him be aware of the error and points it out to him.

There is no such thing as personal salvation. Such an idea of salvation is imagination based on the dualistic perspective. Those who talk of finding Moksha from religious rituals and yogic practices harbor the false notion that the individual ego is real and who are deceiving themselves.

The Gnani will guide the seeker, but it is absolutely necessary for the seeker to do his homework constantly over the guidance and master them by his own use of reason.:~Santthosh Kumaar