Anas reported that when the Prophet used to say something, he would repeat it three times so that it would be understood. When he came to a people, he would greet them three times. [Al-Bukhari]
When we reflect on the hadith above on the repetition pattern favoured by the Prophet, we cannot help but relate it to a modern concept of public speaking called ‘triadic extensions’ . Triadic extensions refer to the use of three words, three phrases or even three parallel paragraphs to drive certain points home and paint a clearer message of the picture. In modern public speaking and communication theory, triadic expressions help to provide structure to thoughts, provide forward momentum with a sense of continuity and reinforce key aspects to the message.
It is interesting to note that the last 3 surahs of the Quran are seemingly triadic in nature too. And God knows best.