It discusses charity, dedicating Chapter 23 of Book 1 on Virtues to it. Tirukkuṛaḷ suggests charity is necessary for an virtuous life and happiness. He states in Chapter 23: "Giving to the poor is true charity, all other giving expects some return"; "Great, indeed, is the power to endure hunger. Greater still is the power to relieve other's hunger"; "Giving alms is a great reward in itself to one who gives". In Chapter 101, he states: "Believing wealth is everything, yet giving away nothing, is a miserable state of mind"; "Vast wealth can be a curse to one who neither enjoys it nor gives to the worthy". Like the Mahabharata, Tirukkuṛaḷ also extends the concept of charity to deeds (body), words (speech) and thoughts (mind). It states that a brightly beaming smile, the kindly light of loving eye, and saying pleasant words with sincere heart is a form of charity that every human being should strive to give. Dāna in rituals Dāna is also used to refer to rituals. For example, in a Hindu wedding, kanyādāna (कन्यादान) refers to the ritual where a father gives his daughter's hand in marriage to the groom, after asking the groom to promise that he will never fail in his pursuit of dharma (moral and lawful life), artha (wealth) and kama (love). The groom promises to the bride's father, and repeats his promise three times in presence of all gathered as witness. Other types of charity includes donating means of economic activity and food source. For example, godāna (donation of a cow), bhudāna (भूदान) (donation of land), and vidyādāna or jñānadāna (विद्यादान, ज्ञानदान): Sharing knowledge and teaching skills, aushadhādāna (औषधदान): Charity of care for the sick and diseased, abhayadāna(अभयदान): giving freedom from fear (asylum, protection to someone facing imminent injury), and anna dāna (अन्नादान): Giving food to the poor, needy and all visitors. The effect of dāna Charity is held as a noble deed in Hinduism, to be done without expectation of any return from those who receive the charity. Some texts reason, referring to the nature of social life, that charity is a form of good karma that affects one's future circumstances and environment, and that good charitable deeds leads to good future life because of the reciprocity principle. Other Hindu texts, such as Vyasa Samhita, state that reciprocity may be innate in human nature and social functions but dāna is a virtue