eager for learning, but there are also some early medieval Chinese and Japanese accounts which relate that Rāhula initially struggled with being a novice and only later appreciated the Buddha's teaching. Besides the Buddha, Śāriputra and Maugalyayāna also helped to teach Rāhula. Rāhula often assisted Śāriputra on his rounds for alms in the morning, and sometimes on other travels. Every morning, Rāhula woke up and threw a handful of sand in the air, making the wish that he may be counselled by good teachers as much as those grains of sand. Still in the same year as Rāhula's ordination, the Buddha taught his son the importance of telling the truth in a discourse known as the Ambalatthika-Rāhulovāda Sutta. In this discourse, the Buddha taught and encouraged consistent self-reflection, to help let go of all evil actions that lead to harm to oneself and others, and to develop self-control and a moral life. He encouraged reflection before, during and after one's actions, and explained that lying makes the spiritual life void and empty, leading to many other evils. When Rāhula became eighteen years old, the Buddha instructed Rāhula in a meditation technique to counter the desires that hinder him during his tours for alms. Rāhula had grown enamored with his own and his father's handsome appearance. To help Rāhula, the Buddha taught another discourse to him. He told Rāhula that all matter is not-self, and the same held for the different parts of one's mental experience. Having heard the discourse, Rāhula started to practice meditation. His teacher Śāriputra recommended him to practice breathing meditation, but was unable to give Rāhula the instructions he needed. Rāhula therefore asked the Buddha to explain the meditation method in more detail and the Buddha responded by describing several meditation techniques to him. On a similar note, the Buddha taught Rāhula at a place called Andhavana about the impermanence of all things, and instructed him how to overcome the "taints" inside the mind. As a result, Rāhula attained enlightenment. Pāli tradition has it that the sermon was also attended by a crore of heavenly beings, who once had vowed to witness the enlightenment of the son of the Buddha. Rāhula obtained the name "Rāhula the Lucky" (; ), which he himself explained was because of being the son of the Buddha, and because of having attained enlightenment. Later, the Buddha declared that Rāhula was foremost among