Hadith of Golden Chain al-Bayt, hence called "Hadith of Golden Chain". Several Important hadith collections quoted it as "Al-Tawhid", "Ma'ani al-Akhbar", and Oyoun Akhbar Al-Ridha of al-Shaykh al-Saduq and Al-Amali of Shaykh Tusi. The hadith is also narrated in sunni hadith books. Regarding the implications of the hadith, there are two extreme opinions by Sunni scholars; While some of them discrediting the hadith by implying that the Sunni books lack it, some others claim that all Sunni scholars accepted it. According to shia, two important points may be derived from the Hadith. On one hand, monotheism takes the believers to "Allah's fortress", which is
Value chain its own value chain. The industry wide synchronized interactions of those local value chains create an extended value chain, sometimes global in extent. Porter terms this larger interconnected system of value chains the "value system". A value system includes the value chains of a firm's supplier (and their suppliers all the way back), the firm itself, the firm distribution channels, and the firm's buyers (and presumably extended to the buyers of their products, and so on). Capturing the value generated along the chain is the new approach taken by many management strategists. For example, a manufacturer might require its parts