[Pooya/Ali Commentary 39:9] See commentary of Ali Imran: 113 to 117 and Ma-idah: 100. As pointed out in the commentary of Fatihah: 7, it is necessary to know the way of life and teachings of the Holy Prophet and his Ahl ul Bayt to find out the right path and to walk on it. Imam Jafar bin Muhammad as Sadiq said: " 'Those who know' refers to the Imams of the Ahl ul Bayt; and 'those who do not know' refers to the opponents of the Ahl ul Bayt; and the 'men of understanding' refers to the sincere devotees of the Ahl ul Bayt." Once Ali and Qambar were taking a walk in the city of Kufa after nightfall. Qambar stopped at the doorsteps of a house in which a man was reciting this verse, but Ali went ahead. After a few steps he turned and asked Qambar: "Why did you stop?" Qambar replied: "He is reciting the Quran in a very tender and melodious voice." Ali said: "The sleep of a person whose mind and heart are ingrained with the conviction of faith is better than the adoration of a doubting hypocrite." It is reported by Qambar that he could not grasp the meaning of Ali's observation, so he recorded the identity of that house in his mind and visited it the next day. He found out that it was the house of a hypocrite. Then he asked Ali as to how did he know what was hidden in the heart of the man? Ali said: "How could a guardian remain unaware of that which is concealed by the people in their hearts?" The Holy Prophet said: "I am the city of knowledge and Ali is its gate." See the commentary of Baqarah: 105 to know that Allah chooses whom He pleases for His special favour; and commentary of Ma-idah: 35 which contains clear guidance for identifying and selecting the true means of approach (wasilah). As for praying in the nights there are no equals to Ali, Fatimah, and Ali bin Husayn Zayn al Abidin in particular among the Ahl ul Bayt, save the Holy Prophet, according to the authentic books of history written by well-known Muslim scholars.