Qalb
In Islamic philosophy, the qalb (), or heart, is the origin of intentional activities, the cause behind all humans' intuitive deeds. While the brain handles the physical impressions, "qalb" (the heart) is responsible for deep understanding. Heart and brain work together, but it is the heart where true knowledge can be received. In Islamic thought, the heart is not the seat of feelings and emotions, but of "rūḥ" (): the immortal cognition, the rational soul. Qalb (قَلْب) literally means to turn about. So what is the connection between “turn about” and “the heart”? When something turns about, it does not remain  the same and so does our heart. Our feelings and thoughts change all the time and that is why it is called Qalb (قَلْب). In the Quran, the word "qalb" is used more than 130 times. Stages of taming qalb. Qalb also refers to the second among the six purities or Lataif-e-sitta in Sufi philosophy. To attend Tasfiya-e-Qalb, the Salik needs to achieve the following sixteen goals.