Kutadgu Bilig is regarded as one of the oldest and important text of Islamic Turkish literature. It is the first example of masnavi and poetic political treatise in Turkish Literature. In the KB text, the "language" subject and the issue – except attachments- were dealt with in the thirty couplet in the seventh chapter and ninety couplet in the nineteenth chapter. In the KB text, the "language" subject and the issue - except attachments- were dealt with in thirty couplets in the seventh chapter and the ninety couplets in the nineteenth chapter. The word tongue (til) was used 459 times in KB. Therefore, the word til "tongue" is the most commonly used word among noun type words in KB test. It is recorded that the KB text is approximately 68,000 words. According to this, til “tongue” word is used about 0, 675 percent in the text. Apart from the seventh chapter in the text, it is seen that the til "tongue" word is used in many contexts. In the text index, til word is given “language, speech, dictionary” meanings. It is seen that the frequent use of the word til is considered not just a subject but also an important issue by Yusuf Has Hacip. The three main principles of Sufism are "less talk, less sleep, less food". The proverb “speech is silver, but silence is gold” reflects this insight in Sufism. In KB, the essential thought is "to listen and understand first, then to talk less and when it’s necessary". In Kuşeyrî Epistles samt “silence” is considered to be among the statues and manners of the Sufis. Kuşeyrî and Hücvirî like all other Sufis, thinks that silence and listening are more valuable than speech and talking. Hücvirî also dealt with the language issue in Keşfu’l-Mahcûb in the context of "samt". Agop Dilaçar compares and associates KB with a few texts from Western World such as Platon’s Politeia and Thomas More’s Utopia. One of the seven properties which makes a text a real text is intertextuality. So that, this attitude Agop Dilaçar pointed is indisputable. However, comparing KB with other texts written at the same period and level is more accurate approach. Kuşeyrî’s Epistles as Arabic and Hücvirî’s Keşfü’l-Mahcûb as Persian are written in XI. century like Yusuf Has Hâcip’s KB. Both of these texts were written before the KB. Maybe Yusuf Has Hâcib did not directly contact with Kuşeyrî and Hücvirî, and their works. However, there is deeper connection with these works than Platon’s Politeia and Thomas More’s Utopia. In this study, the approach of language matter in KB will be compared with Kesfü’l-Mahcûb and Kuseyrî Epistle within the context of intertextuality and common parts will be tried to determine.